Build over agreement. See our guide for more information.

Build over agreement. g. Jul 3, 2025 · A build-over agreement is permission to build over a public drain or sewer maintained by a water provider. The sewer is not on the sewer maps so I now don't know if TW are even aware of the sewer and I don't know what to do about progressing with the build. Now the project is complete, he has asked me to provide him with a build over agreement - which Sep 2, 2015 · They have rejected it on the grounds that they will not allow us to build over a ‘strategic sewer’ which apparently runs down 3m deep. If it is determined that there is no build over agreement in place, the applicant will need to complete a Retrospective Build Over Application. Learn what a build over agreement is, when you need it and how to get it for your property. Nov 20, 2022 · Guys I am really stressed hope somebody can advise. Aug 26, 2022 · Doing some building work and think you might need a Build Over Agreement? Read this blog for all you need to know about them - from the cost to how to get one. A build over agreement is a legal document put in place to protect the public sewer or main drain you are intending to carry out work over, or very close to. These agreements are crucial to ensure that the structural integrity and proper functioning of the sewer network are Oct 22, 2024 · Our article will explain what a a build over agreement is and cover the information you'll need to know if you need a build over agreement for your building work. Obtaining a Build Over Sewer Agreement can cause serious delays when selling your property. Up until the late 1990s, they would have entered into a build over agreement with Severn Trent Water, which stated both theirs and the water company’s rights. But this should be granted as its a small sewer. 41 PM Hi, we have a mains sewer pipe between us and next door and the water company have said we cannot build anything with foundations within 3 metres either side. Work involving underpinning, new foundations, piling or basements requires the prior approval of the water company in your area before any work can begin on site. Step 5 - Drainage Works (amending NIW infrastructure) That includes build over agreements; a crucial factor in getting the go-ahead for your project but a real headache for the inexperienced. Before you submit your build over agreement application, it’s important to prepare everything you need in advance. We’re known to clients all over London for submitting successful applications – and for providing first-class service. Specifications for approved build over agreements Sewers up to 160mm in diameter These are our general guidelines when building within three metres or over a public sewer that is up to 160mm in diameter. During the last 3 years, the property must Jun 9, 2019 · Hi - I am applying for a build over agreement with Thames Water to build over a sewer. Jun 11, 2024 · Im in the process of buying a house. I did planning permission myself (approved), some builders are wanting quotes based on build over agreement with Anglian water for the sewer before we start Apr 28, 2025 · What is a Thames Water Build Over Agreement? A Thames Build-Over Agreement (TBO) is a legal agreement required when someone wants to build over or within: 3 metres of a public sewer, or 1 metre of a public lateral drain Drains are a consideration for any house extension. What is a Build Over Agreement? Sewers are often located within the boundaries Dec 7, 2016 · Build Over Agreement sample contracts and agreements. Learn how to get one, what classes exist, and why it is important for your extension project. This is needed if you are planning to construct a building, an extension, underpinning or undertaking similar construction work near to, or directly over an existing sewer. Please ask for the Limus ‘building over drai A build over agreement is a contract between you and your sewage provider, when you’re building over, or near a sewer. Mar 20, 2023 · Thames Water Build-Over Agreements: When extending your home you will likely be building over or near Thames Water public pipes or sewers that are hidden within your land. If your proposed scheme is within 3 meters of a public sewer you will need to apply for a build over agreement from your local water authority. Water Service Build Over Agreements. The blue hatched markings is the extension. See our guide for more information. Aug 4, 2008 · Build over or near agreement is a better description If there’s a public sewer the other side of the fence in a neighbours garden it’s possible a build over agreement is needed. Water authorities require a Build-over Agreement for any building work over public sewers or within 3m of a sewer or drain pipe. Oct 24, 2022 · Groundwork & Foundations BCO asks for build over agreement after entire project is complete Anonymous user 1 March 2024 - 2. Why does Thames Water have an interest in my extension? Build over agreement specifications Build over agreements will only be approved if the application meets the following specifications: A simple guide to Build Over Agreements. If you are planning to build over or close to a public sewer then you will need a written agreement from your sewerage undertaker. Aug 11, 2008 · We do not know if it is a simple build over agreement. Aug 11, 2021 · A Build Over Agreement is required by water companies for any construction work over public sewers or within 3m of one. This in turn meant that action needed to be taken to ensure these pipes are being protected, hence the Build Over Agreement was created. A ' drainage build over agreement' is a legal document required when you plan to build or extend a property over or near a public sewer or drainage system. They say we need full plans drawn up to send to them and thames water for a build over agreement. For full terms, please see the Policy. Aug 1, 2024 · A build-over agreement is a legal agreement required by your water company. Recieved a letter from building control stating a buildover agreement may be required. I have not touched the manhole or done an over site as yet. You therefore may need to apply for a Thames Water Build Over (TWBO) Agreement before you begin your work. I understand that if I am to build within 3 m of a public sewer, I must get a build over agreement from my local water If you’re planning a new development or extending an existing property over or within 3 metres of a public sewer or lateral drain we’ll need to know. What is a build over agreement? A build over agreement gives the water company peace of mind that any Build Over Agreement The general rule is that if you will be building within 3 metres from a sewer or drain that the building works will need to be approved by the water company. It’s put in place to ensure any building work doesn’t negatively impact a public sewer. Learn why you need it, how to get it and what happens if you don't have it when selling or buying a property. I think your solicitor is confused. Thames Water, Severn Trent, Yorkshire Water), allowing you to build within 3 metres of a public sewer or directly over it. Build over Feb 12, 2024 · The whole purpose of build over agreements and the legislation they come from is to protect the sewer pipe work and give access to them via the chambers. But if you need more information about build over agreements or whether you might need one, have a read of this news article. If you’re planning a new building, a conservatory, a garage or any other extension to your home, it’s important you let us know. A build-over agreement may be required if you’re planning to build something new – whether it’s a house, extension or garage – and there is a public sewer where you want to position your new building. May 6, 2020 · The extension is on top of a public sewage pipe, however there was no build over agreement with Thames Water. This helps to protect the pipes and helps to minimise the risk of pipes being What if I need to alter a sewer or lateral drain in order to secure a build over sewer agreement? If you need to undertake any alterations to a public sewer or lateral drain, such as repositioning an existing inspection chamber, or replacing a defective pipe, the scope of the work will need to be agreed in advance with us. Oct 28, 2013 · Afternoon, I've had an offer accepted on a semi detached house and now our solicitors and the sellers solicitors are arguing over build over agreement. May 22, 2018 · It is not uncommon for public sewers to be located within the boundaries of a property. You will need this if you are planning to build over or within close distance (usually 3 metres) of a public sewer. Jul 10, 2023 · A build over agreement is approval from a Water Authority for works over or near a public sewer. We need to make sure your work doesn’t accidentally affect a sewer, or limit our access if we have to repair it. Timescales are summarised in the table above. A plan showing the foundation design in relation to Mar 24, 2023 · Hi wondering if anyone is in the know - we are sold stc and buyers solicitor has flagged the (30 year old) extension built over foul drains. By obtaining this agreement, property owners demonstrate a commitment to maintaining the integrity of essential utilities and ensuring the safety and well-being of the community. (we only had basic plans drawn up as we thought it was a nice small easy Extension. I asked my builder on several occasions to get the build over agreement sorted with ST water and I was Jan 2, 2025 · Do I need a buildover agreement over a private sewer. Build Over Agreements A Build Over Agreement is an agreement between a property owner and Thames Water, a water and wastewater service provider in the UK, that allows for the construction of a building or extension over or close to a public sewer. Sep 18, 2012 · We would like to show you a description here but the site won’t allow us. The process involves applying for an agreement from the water company, assessing the application, and issuing the agreement before proceeding with the construction work. The document outlines the sewer layout in relation to existing buildings and new extensions, emphasizing the need for verification of service pipe positions on-site. 4m. The technician acknowledged that what we want to do is allowed according to building regs, but rejected it anyway stating the reasons: the 225mm drain serves a Jan 15, 2004 · Thames Water wrote to me the other day saying I needed to enter into a build over agreement with them asI am planning a small extension at the rear of my house. Extension completed a month ago. We propose to build near, but not over the public sewer at the rear of the property. For larger or more complex work, a build over agreement is needed, which involves more surveys, higher costs, and longer approval times. Example Drawing for Build Over Agreements - Free download as PDF File (. We have detailed here the agreements and any other information you need to know to build over a sewer. Read more about our cover and protect your home. Find out more before you start construction. Find out what Build Over Agreements are and if you need one for your home renovation project. May 20, 2012 · We've recently applied to Severn Trent to build over a class 3 public sewer running though our property. The water company would do everything they could to avoid smashing things up and it’s an uncommon last resort, but it can happen. I have emailed Severn Trent with the What is a build over agreement? A build over agreement is a Thames Water seal of approval for the building work you plan to have carried out over or near a public sewer owned by us. Once you decide to undertake a side return extension project, one of the factors you will need to consider is whether any of the building work is being carried out near to a sewer. Before you apply, please make sure you have: A location plan Existing and proposed building and drainage plan Aug 6, 2008 · My question is, do I need a build over agreement? I assume I do as I know there are 2 manhole covers in the back garden that the extension would be built over. This obligation is even enshrined as a covenant in the Deeds of some more modern properties. Apr 3, 2024 · However, if you can see the sewer line passing under your house, lean-to, extension or conservatory then you will need a Build Over Sewer Agreement from your Water Authority. Jun 10, 2024 · Dear expert, Any suggestions from the following response from Thames Water. Which for obvious reason isnt good . Wondering if you really need one? I've got you covered with all the answers. It is an offence under Article 236 of the Water and Sewerage Services (Northern Ireland) Order 2006 (as amended Water and Sewerage If you are looking to extend your property close to the boundary of your property, you may need to consider the implications a Drainage Build Over Agreement can have. After much going back and forth, it seems they didn't need a build over agreement when the extension was built. " Feb 28, 2024 · Architectural services Foundations near public sewer Anonymous user 28/02/2024 - 3. cheers - any idea of typical costs for this? is it a massive money making thing for them? If we agree to you building over or within 3 metres (of the centreline) of a public sewer, then the permission will be subject to certain checks, conditions and possibly a legal ‘Building Over Agreement’ between the land owner and United Utilities. Jun 19, 2025 · Building control asked for a build over agreement with Southern Water. 39 If we consent to your plan by letter, following the completion of alterations to our network, it will cost £577. Mar 19, 2023 · What is a build over agreement and when is one needed? First, in this section, we’ll take a look at exactly what a build over agreement is and how it can affect your project. During the last 3 years, the property must have remained occupied and not have been altered or extended. Jul 5, 2024 · Buying house with Build Over Agreement I’m in the process of buying a house in the South East of England and the seller has shared a Build Over Agreement they have with the water company. BCO has been coming to visit from the get go of the project. com NIW will authorise the Agreement and will issue it to the applicant. They are not instant. Learn more about building over sewers or public drains with our build over agreement before starting any construction work. We'll guide you through the process below. This agreement allows the property owner to construct over or within 3 metres of a public sewer or within 1 metre of a public lateral drain. I assume the footings will need to go down to this depth at the corner, but how far Jun 21, 2022 · Build over agreements are private contracts with the water company. Thank you for reading this. Public sewers are vital for waste management, and access to them must be maintained for repairs and maintenance. Jan 5, 2023 · Any part of the property that has been built to building regulations (or would typically be inaccessible by the water company) would require a build over agreement, regardless of what the room is being used for. Apr 19, 2016 · Some water companies require a Build Over Agreement to be signed. What is a Build Over Agreement? If the above is the case, a build over agreement is entered with your public sewer supplier for the building work that is planned over or near the public sewer. Jul 3, 2025 · What is a build-over agreement? A Build-Over Agreement is a legal permit required when constructing buildings or extensions over or within 3 meters of a public sewer line. We will assess the details you provide to us and confirm whether a Build Over Agreement is required. Aug 25, 2016 · The conservatory is built over the diagnol sewer pipe, our solicitor is insisting the seller has to produce a build over agreement for the conservatory which was built before her ownership or purchase an indemnity policy, did build over agreements exist in the early 90's I seem to think that the water authorities only claimed ownership of sewer CONTACT BLOG Domestic Architect Developer Contractor Get a Quote Architectural Services New Build Rear and Side Extension Loft / Basement Conversion Commercial Survey Project Management Clients Representative BIM Potentially. Find out what you need to do if you're planning work close to our sewers. In such cases, you are legally required to obtain a Build Over Agreement from your local water authority (e. 3. Bear in mind that typically the water authority's blurb mentions the location of the foundations to the pipework, and the location of the chambers to the walls. Apply for a Build-Over Agreement To do works over an easement or within 1 metre of a Coliban Water asset, the property owner needs to enter into a Build-Over Agreement. So, we're looking to do a single storey extension at the back of our terraced house - this is complicated a bit by the fact that a build over agreement will be needed to deal with a shared sewer for neighbouring What is a Build Over Agreement? One of our conveyancing assistants, Maria, explainsIf you found this video interesting, please subscribe to see new videos Dec 28, 2021 · Building control is ok with our application (building notice), neighbour is ok with the works proposed (party wall), thames water is ok with the drainage (build over agreement). There is a mains foul sewer that runs through the property that I've had an offer accepted on and an extension that was built prior to the Anglian Water will assess the details you provide to them and confirm whether a Build Over Agreement is required. Where can I get my ex Feb 12, 2024 · Welsh Water Build over agreement Adaminyei 15 Mar 2024 build over agreement build over sewer technical drawings manhole inspection chamber patio Prev 1 2 A There are multiple risks to not securing an easement, there can be a financial risk due to diversions or legal challenges or a health and safety risk such as a build over or pipeline incident. So that's what If we agree to you building over or within 3 metres (of the centreline) of a public sewer, then the permission will be subject to certain checks, conditions and possibly a legal ‘Building Over Agreement’ between the land owner and United Utilities. It looks like the rear extension has been built over the public sewer and the sellers don’t have a build over agreement (wasn’t required as extension was done before 2011). I now plan to re-do the extension and will have to apply for a new build-over agreement. Building near or over a minor public sewer Find out what you should do if your project could affect one of our sewers. We were building over a shared drain that runs along several properties. 0 Introduction Householders and developers planning to build close to or over a public sewer have to seek permission from the relevant sewerage company. No build over agreement over sewer - any experiences? Hi all, We were close to exchanging on our purchase, but an issue was flagged whereby a garage had been constructed several years ago over a public sewer. May 29, 2019 · We have been advised by our architects that we will need a build over agreement as we will be building over or within 3 metres of a drain or inspection chamber. You are able to get a retrospective build over agreement where your local water supplier may come and inspect the work. View the Self-Certification Build Over Agreement Form in our collection of PDFs. The proposed foundations sit much Public sewers If you hope to build over or within three metres of a public sewer you may need a build over agreement with your local water authority (contact your water supplier for details). 1. 29 Introduction This quick reference guide is designed to help you understand what route your application will take with reference to certain circumstances. Contact us If you’re building within 3 metres of a public sewer, you’ll need our approval first. Mar 27, 2024 · My building control sent me an email (which was forwarded on from Thames Water) saying "Your client requires a build over agreement before commencing works, because we believe the proposed development is within 3 metres of a public sewer (of which, the internal diameter is less than or equal to 150mm). For more information please visit www. If we agree to you building over or within 3 metres (of the centreline) of a public sewer, then the permission will be subject to certain checks, conditions and possibly a legal ‘Building Over Agreement’ between the land owner and Building near and over agreements require correct design to satisfy your local water company and council. Private sewer blue line If the conservatory was constructed more recently without a build over agreement then the same sanctions and same solutions are available. Build over agreements are required for any building works to existing properties within 3 metres of a public sewer, or within 1 metre of a public lateral drain. It is worth noting that if the conservatory required building regulations approval, then the building inspector may require to see a build over agreement before signing off works. Build Over a Sewer Formal Approval Application If your application doesn't meet the criteria for a Build Over Self-Declaration, we'll automatically move it over to a Build Over Formal Approval Application. Jul 13, 2023 · Hi all need some advice please! We are looking to build a rear extension to replace our current rear extension, we have applied to Southern Water for the build over agreement as the extension will be over the top of the existing sewer manhole, which incidentally is about half a foot from our Oct 17, 2024 · A Build Over Agreement is a legal agreement between property owners and utility companies, often related to sewerage systems or water pipelines that run through or near private land. I have asked my through my sollicitors the sellers to take out an indemnity policy, which they refused. The cost of this service is £52. Questions you need to ask. As part of this application, you may need to have a CCTV survey of the drain both before the work and afterwards. The vendor has produced a signed building control final certificate for the extension. Response time: The time taken to process a build over agreement depends on the size of the sewer and whether any post-construction surveys are needed. In the process of buying a house. While we can provide some general information, it's important to note that the specific requirements may vary depending on the work being undertaken. If the plans for your extension build over, or near (within three metres) to a public sewer, certain permissions must be granted before the building work can go ahead. Sign, print, and download this PDF at PrintFriendly. Define Build Over Agreement. It shows that there is a sewer running underneath the extension built by the seller in 2019. There was a shared manhole being stressed no one mentioned i needed a build over agreement till work finished. It is important that Oct 8, 2016 · For Severn Trent Water, when a property owner wants to build in close proximity to an existing public sewer, they will have followed one of two processes. Feb 11, 2022 · A build over agreement (BOA) is needed if building work is to take place within 3 metres or over an existing drain or public sewer. Not once did he mention a build over agreement. Apr 7, 2025 · What Is a Build Over Agreement (BOA)? A Build Over Agreement is a legal document between the property owner and the local sewerage undertaker (e. Did the current owner of the house own the lateral drain in 1994. We need to make sure that building work doesn’t damage the sewer and potentially your home and environment or make it harder for us to access and maintain a sewer in the long term Sep 14, 2020 · Statutory basis for requiring build over agreement Build over agreements are agreements entered into between developers and the relevant sewerage undertaker to regulate works which could impact a public sewer. A build over agreement wasn't obtained at the time. Please note that your work must not restrict or remove our ability to maintain, repair or replace sewers, even on private land. Architecture First includes build over agreements in their design package for house extensions. The extension is on top of a public sewage pipe, however there was no build over agreement obtained via Thames Water. Applications Full build over agreement Apply online for a full build over agreement. Your application will be delayed if you don’t provide all the information we need. Is your project about to start on site? Have you considered if you need a Build Over Agreement? Generally your designer or contractor will discuss this with you long before you start on site. Dec 4, 2016 · Hi, We're just about to get started on our extension and are trying to minimise costs by doing simple things and some plans ourselves. Jun 24, 2016 · As Doozergirl's post above, I built-over in 1987, before adoption by South West Water, but the council, who were then responsible for the sewer, still required a build over agreement. Jun 28, 2024 · Obtaining a Build Over or Near Agreement with the Water Company is an indispensable step for any development project in the UK involving public sewers. For more information please see Page 6 of our guidance If your application meets the build over requirements, we’ll send you a Consent to Erect a Structure (otherwise known as a Build Over Agreement) under S148 of the Water Act 1989. The agreement also makes sure Thames Water has access to maintain or repair the sewer network. Jul 4, 2024 · Hi all, I've applied to build over a 225mm drain with piling and bridging over the drain, and I've just had the application rejected. Sep 7, 2020 · The problem is, I have gone so far with the build and do not have a build over agreement in place. In conclusion, build-over agreements became a requirement in the UK in 2011 as part of the Water Industry Act to prevent damage to public sewers caused by construction work. If it is then you may be able to utilise our Building Control Protocol Agreement through your building control inspector and you will not need to fill in this form. The manhole access for this run of sewer pipe is in next door's back garden. Q1: Should a build over agreement have been obtained when the property was changed from 1 story to 2 story? Step 4 - Owner to return signed Build Over / Near a Public Sewer Agreement Please return the Agreement with all of the required signatures to developerservices@niwater. As you can see from the attached plan that I've drawn post sewer trace, I'd like to build right up to one of the inspection chambers at the rear. Apr 8, 2021 · For more information on building agreements, please read the following answers from Thames Water: What so is a public sewer or sewer, simply, a canal that serves more than one property, falls as part of a Thames Water Build over Agreement. If you’re planning a new development or extending an existing property over or within 3 metres of a public sewer or lateral drain we’ll need to know. What if there is no build over agreement? It is unlikely that this building control inspector will sign off the work if you don't have a build over agreement in place. Jan 28, 2011 · The footings for my extension is about 80 cm from a shared sewer. If building within 3m of a shared/public sewer you will need approval first Quick, easy and online Build Over Agreement plans to support build over agreement applications. Julie Tomasik, director and residential conveyancing lawyer at Ansons Solicitors in Cannock and Lichfield, Staffordshire, explains what you Apr 23, 2023 · Hi, I need some advice, I'm really stressed at the minute. Obviously, take legal advice first. The builder asked myself and architect to go ahead with this. I have submitted the application now. Your local Water Authority has a statutory right of access to public sewers and so you cannot build over these sewers without first obtaining the authority’s consent. In this article, we explain everything you What is a Build Over Agreement? A Build Over Agreement is required if you are planning to build within 3 metres or over a public sewer. It's always best to consult directly We’ll endeavour to do this within 10 working days. Indemnity insurance - what does it cover? The following guidance explains what you need to consider for any proposed structure being built over or within 3 metres of a public sewer. This was in fact rejected after a CCTV survey due to the pipe being pitch fibre. Learn what a build over agreement is and when you need it for your home improvement works. Before you apply, you might want to take a look at our guide to building over or When dealing with drains and build over agreements, if your pipes are 150mm or less in diameter, you can usually get approval through a self-certification process within 10-14 days, costing around £360 plus fees. Therefore, if there is no build over agreement, purchasers and their solicitors will most likely ask the property owner to rectify this issue, especially if they have a lender involved. This is due to the long term obligations Aug 12, 2023 · A Build Over Agreement is a vital aspect of any construction project that involves building over or near existing public sewers, drains, or water mains. The purpose of this agreement is to ensure that property construction, such as extensions or new buildings, does not interfere with essential utility services. This agreement ensures that the construction May 23, 2023 · Can anyone please help? I have had a provisional build over agreement from water board. Before you start developing, you can apply to us for a desktop assessment and we’ll let you know if there are any sewerage assets that might affect your work, potentially saving you time and additional costs down the road. The vendor has produced a signed building control final certificate for the The Thames Water Build-over Agreement itself will ensure that the drains are sufficiently bridged, or lintelled over, with a sufficient drawing and detail being provided by the architect setting out exactly how it will be bridged, ultimately ensuring that the risk to the drain is as low as it can possibly be. What is a Build Over Agreement and do I need one? […] Type of Insurance and Cover The Build Over - Sewer Indemnity policy has been specifically designed for the situation where your property or part of your property has been erected over or within 3 metres of a sewer without a build-over agreement from the appropriate water authority. 17 hours ago · South Korea and the United States have reached a foreign exchange agreement and plan to announce the deal soon, South Korean Finance Minister Koo Yun-cheol said. It bugs me its called a build over agreement, but it should really be a build over or build near agreement, as the rules come into force if you build within 3 metres. It seems like the drainage system is the responsibility of the water company and you are down- flow so won't be affected by whatever occurs at the neighbours, so what are you worried about? Dec 25, 2012 · Hi, Hopefully you guys can help, I'm looking to purchase a house that had an extension built in 2017. The ‘Build Over Agreement’ is a legal document which is put in place to protect the sewer/drain and makes sure that we can still access the pipe if something goes wrong. That's what mine was until they checked the sewer, then they discovered that it was not fit to be built over so tried to push the cost on me, and wanted £1500 just to start a quote. a. If you are unsure whether your proposals comply with the above criteria, you can submit a consultation to Anglian Water using our online portal Inflow. . I/we acknowledge that liability for rectifying any defects with the sewer/drain rests with me/us and that any works to the sewer/drain will need to be agreed in advance with South West Water as detailed in the build over guidance notes. Mar 9, 2020 · A Build Over Agreement is a legal document that allows building work near or over a public sewer or drain. 5 m parallel to the end of the proposed extension. That's what the war firm company Build over agreement specifications Build over agreements will only be approved if the application meets the following specifications: The documentation required for a build-over agreement application includes detailed construction plans, a survey of the existing drainage system, and any proposed changes to it. Yet we are building over a private sewer and 8m away from where it joins the public one. Does anyone know if this will require a build over agreement? Also, the manhole shown on diagram is about 150 cm deep. You really need to look at the building plans and confirm where your drains run and whether they are shared, the official sewer maps rarely show minor shared drains. Oct 11, 2013 · We only found this out when building regs infomed us. Rather than a proper extension, I wondered if I could build a lean to so the foundation (as such) would only be 1 or 2 The Build Over Agreement will outline the specific requirements for the build-over, including roles and responsibilities, appropriate construction methods, insurance requirements, warranties etc. Thames Water build over agreement When building a home extension, adding a garage, conservatory or annex, it is highly likely that there will be drainage pipes in your land that require attention. Failing to obtain a build-over agreement can have significant consequences, including: Delays in construction. A Build Over Agreement is a legally binding document that permits construction or alteration works to be carried out over or close to existing underground public sewers. We've had an extension built and are nearing completion. He said the the current tenents said extension on the rear has been built over a manhole. Build Over. Learn how to check if you have a public sewer on your property, what are the benefits of having a build over agreement, and what to do if you are buying a house without one. In the meantime, he built a bridge over the pipe and continued with the wall (expecting a pretty standard approval, I guess). Aug 10, 2017 · We've bought a house with a sewer and no build over agreement. This policy is also known as: ‘Absence of Build-over Agreement’ or ‘Sewer Insurance’ The Build Over – Sewer Indemnity policy has been specifically designed for the situation where your property or part of your property has been erected over or within 3 metres of a sewer without a build-over agreement from the appropriate water authority. Even if you can't see them, you should always be aware of our sewer pipes if you're building near to or over them. Trying to make sense of the information online re build over agreements and starting to panic we might not be able to build over it as then three houses in a row would have been built over? Aug 31, 2022 · Hi Woody, council have not asked for the build-over agreement to pass the extension! I need to do some minor works to get it signed off and think I should get this done first before asking for a copy of my file to proceed with the build over agreement. This is why we have a building over team and approval process in place, where we work with you to ensure your development can proceed whilst ensuring that both your property and our sewers are protected. If you’re concerned or confused about applying for a build over agreement, get in touch with the experts at Plan Masters. 34 PM Hello I am looking to build an extension. The water authority have a statutory right of access to public sewers and so nothing can be built over them unless the authority’s consent is first obtained, in the form of a “build over agreement”. For full details of this, visit the Thames Water Build Over page, but… Mar 4, 2019 · Thanks in advance to any of you experts that can give their thoughts on this. You can build over the pipe but the inspection chamber will need to be moved off the main run. Feb 3, 2023 · Tips Tip 507, Build-Over and/or Re-Route Review and Approval Process Summary: Seattle Public Utilities (SPU) has limited options and restrictive requirements for allowing property owners, builders and developers to construct new and/or modify existing structures over an existing public sewer and/or storm drain mainline through a build-over agreement. Apr 3, 2023 · The report will detail whether there is a build over agreement and provides purchasers with a plan indicating the position of any water and drainage pipes. Build over indemnity insurance can cover you from costs arising with problem drains and sewers. The sewer is 525mm diameter and at a depth of 2. However, if no prior build over agreement can be found the next step in the process is completion of the ‘Retrospective Build Over Application Form’ for an extension which has been built over a sewer without prior consent from NI Water. Avoid the risk building over infrastructure Build Over Agreements – Essential for Sewer-Safe Projects When extending your home, particularly with rear or side extensions, you may come across shared or public sewers running beneath your property. Safeguarding sewers and ensuring access is maintained is an extremely important part of the construction process. It’s in place to protect the sewers and drains supplying you, and your neighbours. When we bought the Aug 30, 2023 · Restrictions and conditions: The build over agreement will typically include specific restrictions and conditions, such as maintaining a certain distance between the building and the sewer or water main, using specific construction materials, or following specific building practices. Just had a call from the surveyor. Exemption from building regulations doesn’t give you automatic consent to build over or close to a water company’s sewers. This way the supplier can approve the new foundations and that the correct clearance has been allowed for. This will normally require a formal build-over agreement to be entered into between the home The fees chargeable for these different services and further information can be found by contacting your relevant water company at the address given at the end of this guide. The property owner needs to sign this consent. Declaration: self-certification for building over a sewer Before you complete this declaration, find out if you need a full or self-certified build over agreement The Sewer Indemnity policy provides cover when a residential and/or commercial property or part of a residential and/or commercial property has been erected over or within 3 metres of a sewer without a build-over agreement from the appropriate water authority. This policy is also known as: ‘Absence of Build-over Agreement’ or ‘Sewer Insurance’ The Sewer Indemnity policy provides cover when a residential and/or commercial property or part of a residential and/or commercial property has been erected over or within 3 metres of a sewer without a build-over agreement from the appropriate water authority. A build over agreement is a legal document that is required when a property owner wants to build a structure over or near a public sewer. A Build Over Agreement is a formal approval from Thames Water, certifying that your proposed construction won’t harm their sewer system. It outlines the main impacts that drainage may have on your project. Feb 3, 2023 · SDCI ensures the build-over consent agreement/ease-ment is approved by SPU prior to issuing a building or land use permit. I doubt Thames Water would have gone through the Build Over process if it wasn't a shared drain. Not having one will be problematic on sale and remortgage as mortgage lenders will not be happy. Dec 5, 2012 · Anything within 3m will require an agreement from them though if you're not building over a sewer you will require a 'build near' agreement. If not, our sewers and the service we provide to you could be affects. Mar 9, 2020 · What is a Build Over Agreement? A Build Over Agreement gives the Water Company assurance that the work to be carried out will not negatively affect the sewer below and it also ensures that the Water Company will still have sufficient access to the sewer so it can be repaired and maintained. Your Registered Building Inspector will need to see the build over agreement before they can issue a completion certificate. Build over agreements need to be obtained from water companies when extensions are built above or near to public sewers. During the process Jan 20, 2008 · Hi, we are currently having our extension built and discovered a sewer pipe running that serves every 4 properties in our bungalow estate. Feb 28, 2024 · Architectural services Do I need a build over agreement for a lean to? Anonymous user 28 February 2024 - 3. If a full application and agreement is required, this amount will be deducted from the full application fee. If I do, would I be able to do a self-assessment or would this need an approved build over agreement? The buyers solicitor is asking for a build over agreement for the ‘extension’, which to my knowledge doesn’t exist and wasn’t even flagged up when I bought the property a year ago. Someone mentioned i need to get a cctv report after the works were complete so i have done that now but the drainage Feb 11, 2022 · A build over agreement (BOA) is needed if building work is to take place within 3 metres or over an existing drain or public sewer. Find out the risks and costs of building over a public sewer without permission and how it affects conveyancing. In your case you are building over the man hole cover, albeit moving it. Some people would walk away, others are happy to take the risk. I have applied for a build over agreement with Welsh Water and have just had a sewer trace performed. uk In this must-watch video, I delve into all the essential aspects of submitting your build over agreement to thames water. Sep 1, 2016 · One wonders why the term 'build-over agreement' even exists. The The purpose of a building over agreement is to set out the terms for allowing you to build over our sewer, the liabilities upon each party with regard to future damage to the building or sewer and agreeing the rights of access to repair the sewer in the event of a collapse. Thames water have sent a letter to let us know that we will need a build over agreement as there is a manhole that will need to be moved. They require "Existing" and "Proposed": a) Cross-sectional foundation plan b) Ground floor plans How do people usually determine the existing foundation plan? Do you actually dig down until you see the However, there is a man hole in the side return area we would need to build in. So it’s Find out more about diverting a sewer. It is typically necessary for property owners or developers who plan to construct structures, extensions, or other developments that will be built above or adjacent to underground infrastructure. Dec 28, 2021 · a couple of questions: * is it correct that we're looking at public drains and hence I need a build over agreement or a self-certified building agreement? * what options do I have in moving M1? clearly the manhole can't be under the extension, hence I'll have to move things around. Jul 10, 2023 · A build over agreement is approval from a Water Authority for works that you are planning to carry out over or near to a public sewer. Even when the authority doesn’t own the drain, it can still cause problems when laying foundations or flooring. Southern Water is now asking for detailed drawings of the foundation design, and details of existing/proposed plans, including any known existing drainage arrangements. If you intend to build over or close to a public sewer (normally within 3-5 metres depending on the size), then you must apply to Severn Trent Water for a building over agreement or self-certification declaration. It gives assurance to your local water authorities that they will be able to access the pipe if they need to clean or repair it. To ensure a speedy turnaround, please ensure the site boundary is coloured green and the public sewer is coloured red on all drawings provided. It details whether it will be a build over declaration (BOD), an approved build over approval application (BOA), an approved build over with a sewer protection agreement (SPA) or where the proposal won’t be acceptable. This responsibility may even be found in your house deeds, especially if you have a modern property. Our building over our sewers page will tell you everything you need to know. Failure to do so can result in significant legal and financial consequences, including the removal of the offending structure at your own expense. It ensures the longevity of critical infrastructure, safeguards your investment, and protects you from severe legal and financial consequences. This legal agreement gives you conditional permission but protects our right of access. Let’s take a look at Drainage Build Over Agreements and whether you need one. Guide to declaration of work for building over a sewer Construction services details document Sewer adoption flow control manhole standard detail S104 Technical guidance Advice for builders and developers Advice for builders and developers guidance booklet Standard 32mm commercial supply with provision for a 20mm – 25mm in-line AMR meter I/we intend to verify the condition of the sewer/lateral drain by exposing the whole length of the pipe which is intended to be built over. Was it a requirement by law to seek a buildover agreement from wessex water in 1994 of that drain if it was privately owned. The distance away from the sewer applicable depends on several factors, including the depth of the sewer What is a Build Over Agreement? A Build Over Agreement is a legal contract that is required when building over or near a public sewer, drain, or utility. Flowchart - Build over drainage process We won’t allow building over or near water mains, sewer rising mains or sewers on a new development or redevelopment site. Feb 28, 2024 · Find out can you build over a manhole? What to do if buying a property and a manhole is in the house. Aug 7, 2025 · A Build Over or Build Near Agreement is a formal agreement between you (the homeowner) and the local water authority. Sep 11, 2020 · Home owners need a Build Over Agreement when building work is to take place within 3 metres of or over the route of a public sewer or drain. Build over agreements are legal contracts between property owners and sewer companies that allow building over or near public sewers. wabdesigns. Sep 11, 2022 · What is a Build Over Agreement? A Build Over Agreement is a legal contract between the property owner or developer and Southern Water. This agreement sets out the terms and conditions for the construction work, including any necessary precautions and protective measures to be taken to safeguard the public sewer or water main. means a written agreement signed between the Connecting Party and Irish Water which, amongst other things, (a) grant’s Irish Water’s consent to and (b) sets out the commercial and technical terms governing, the building over (or building near) parts of the Network that are located under the ground. Now, the I could take the indemnity insurance myself for 500£, which is not much The purpose of a building over agreement is to set out the terms for allowing you to build over our sewer, the liabilities upon each party with regard to future damage to the building or sewer and agreeing the rights of access to repair the sewer in the event of a collapse. Build Over Agreement, Leading CCTV Drainage Surveyors in the UK, offering sewer line tracing to locate your drainage in relation to your property. Nov 10, 2022 · Sounds like this scenario below from Thames Water guidance. I’ve enquired with the council some weeks ago regarding removing the existing conservatory and building an extension, and they told me they would need full plans due to a public drain close to the proposed extension. , Thames Water in London). 59 PM Long story cut short, we've just had a side extension built. Even though we can provide different methods to build over and protect the sewer, severn trent are worried if they ever need to access it in the future. When extending your home you will likely be building over or near Thames Water public pipes or sewers that are hidden within your land. SDCI also issues side sewer permits for build-over agreements which authorize construction of the build-over or re-route, conduct site inspections during construction, and coordinate actions related to obtaining the as A build-over agreement is a legal contract between a property owner and a water or sewerage company. If you can demonstrate that, then an agreement should be given. How much will it cost? The charge for building over sewers varies based on the type of agreement: If we consent to your plan by letter, with no alterations needed to our network, it will cost £131. co. If the water company required access and no build over agreement is in place (assuming one is required), they’d have the right to come in and dig up your floor. Read more about our Services/Drainage legal indemnity policies, including a brief overview and specimen wording so you can easily compare covers. We've fulfilled the application criteria and have had a Jun 11, 2024 · Your application was missing the following: Sectional drawing showing proposed foundations and sewer(s) Please confirm that the cross section provided is relevant to your build over as we cannot accept typical cross sections for both sewer. Obtaining a build over or build near agreement from South West Water or any other water authority typically involves specific processes and may require meeting certain criteria before any work can take place. This is to prevent damage to the sewer network, and ensures we have suitable and safe access to carry out maintenance and repairs. It would cover access for maintenance, liabilities during constructions, damages to pipes, raising of the manhole etc . If you are planning to do any building work or development work which may be close to or over our sewer network, we will need to help you manage this. Its united utilities. Here’s everything you need to know about a build Build over agreements and building over sewers If you wish to build over a sewer, you need a build over agreement. txt) or view presentation slides online. It includes specifications for materials and construction practices, as well as disclaimers Oct 22, 2022 · No build over agreement? xJoJox_3 Posts: 15 Forumite 22 October 2022 at 6:51AM edited 22 October 2022 at 1:08PM Hi, We’re in the process of buying a house and it has come up that an extension was built over a public sewer in 2016. If any part of the drains has been built over, please provide a copy of the build over agreement with the Local Water Authority. 2. (Unless confirmed in the service agreement) NOTE: Where the client appoints a contractor directly and the Architect/Consultant is not project managing the works as Why you need to let us know We are responsible for all public sewers within our operating area – that’s all of evon, ornwall and small areas of orset and omerset – this includes the maintenance of them. Find out how to apply, check maps and avoid damage to sewers or drains. Build Over Agreement Drain/Sewer – Build Over Agreement This section has been written for homeowners and developers who may be considering building an extension or making alterations. Initially, I wrote back saying the sewer is at the front but they said: Prior to October 2011 the property may have been privately Mar 28, 2020 · Drainage can complicate your building project. If a full application and agreement is required, this amount will be deducted from the full application fee The Build Over Agreement was established following a change in the law, in October 2011, stating that all new and existing sewers are to be adopted by the local water authority. a completed application form your building plans your application fee a CCTV report or confirmation that the sewer will be replaced (if building over a sewer). I confirm that my proposed structure will not require building over more than 6 metres of the public sewer/lateral drain 12. Mar 28, 2020 · Drainage can complicate your building project. With almost 450,000km of sewer pipes in the UK, running under streets and gardens, as well as underneath fields and other land, chances are there will be a public sewer close to your site Terry Wilson explains what a build over agreement is in this short video. I have done a bit of research myself, there is a public sewer drain running approximately 1. pdf), Text File (. Feb 3, 2025 · A build-over agreement is a formal document issued by Thames Water (or your local water authority) granting permission to build near or over a public sewer. They have provided a quote for this but we’re reluctant to spend any more than we have to. Your application was missing the following: Sectional drawing showing proposed foundations and sewer(s) Please confirm that the cross section provided is relevant to your build over as we cannot accept typical Jul 25, 2023 · We will assess your proposals and enter into a Build Over Agreement with you, consenting to your building works, once the drawings are acceptable. To help you understand what a Build Over Agreement is, and why Thames Water might want to be notified about your building work, we thought we break everything down for you and explain what it is, why you need it, and what you need to do. Feb 8, 2019 · If an extension is built over a drain with no agreement, in theory the water authority can force you to have it taken down. How to secure our consent to build over or close to a public sewer or lateral drain The first thing to do is check if your new building is subject to the Building Regulations. If you're seeking information about Build Over Agreements in the UK, you've come to the right place. Sewer Diversion & Build-over Agreements If a pipe is adopted by the sewage undertaker and conflicts with development proposals, a formal build over agreement or diversion (under S185 of the Water Industry Act 1991) with the sewerage will be required to agree the works. I was a newbie in building and In covid started building work 6 meter extension all approved by build regs etc. As a property owner, you may need a build-over agreement to extend your home or maximise the use of your land. Nov 28, 2014 · On his visit, the BR told me I need a Build Over Agreement from Southern Water. In the London area this is Thames Water. How about you sue them for the difference in value of the property with and without the extension. It may also jeopardise the future sale of your property. Planning on building near or over a sewer? You'll need to take some things into consideration. If you get approval, you may start your works, subject to having all other relevant permits and approvals required by law. Mar 9, 2020 · Has your solicitor asked you for a build over agreement? Chances are you're selling your house & you’ve no idea what they're talking about or where to get one. Without this agreement, your entire project could be at risk — halted mid-construction or, in the worst-case scenario, ordered to be torn down. Building near and over agreements require correct design to satisfy your local water company and council. They protect the sewer from damage and ensure access for maintenance. Jun 8, 2008 · The build over agreement is for new work after the change in ownership. Would building control know about the pipes, and take this into consideration, would they not need to see a build over agreement first to sign it off? Jun 17, 2023 · Good afternoon all, I have submitted a build over agreement application and they have come back with the following query: Your application was missing the following: Proposed building drainage layout plan Ground floor plan showing proposed private connections onto the sewer. i. Everything is now done and buildings certificate issued. , it will need to be dealt with on a case by case basis. Fines or legal Jul 2, 2025 · To find out if there's assets on your property, see locating assets. We are currently waiting to find out if the owner has a build over agreement in place If there Hello everyone, I'm seeking advice on applying for a build over agreement to construct a rear single-story extension near a public sewer. 13. It gives assurance that you have given the sewer the correct clearance from your new foundations. I confirm the extension will utilise strip/trench fill foundations that will be a depth greater, or equal to the invert of the sewer (piled or raft foundations require a full build over agreement). A build over agreement is a form of consent, required from your sewage provider if you are building over, or within 3 meters of a public sewer. For build overs which have been completed post 2007 a Retrospective Build Over Application must be completed. Building close to or over a public sewer without having obtained formal approval is illegal. It is important that this is in place if you plan to build on or within three metres of a public sewer. If you are planning to build an extension, conservatory, or any other structure over or near a public sewer, you need to obtain a Building Control Build Over Agreement (BCBOA) from your local water and sewerage company. They want a build over agreement from us but the extension was done in 1993 so they didn't even exist back then! The other thing they have suggested if we can't produce one is indemnity insurance for £300. Neighbours either side have already built side return extensions. k7f a7ra zsz 54 wfu8k h2s1ylaz 6vdjmv a5xj1 d2tdf 3un