What is a Thames Water Build Over Agreement?
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.
It is important that public pipework is protected at all times and that your build or extension isn’t going to hinder access to them, or worse yet, cause blockages to the Thames Water owned pipes.
You therefore may need to apply for a Thames Water Build Over (TWBO) Agreement before you begin your work.
How do I know if I need to get Thames Water approval?
If you’re extending or adding to your house at all you will always need to find out if there are pipes/sewers under or nearby your site.
If there are pipes within 3m of your proposal, you will need Thames Water approval.
How do I locate the pipes/sewers under my property?
First of all, try searching your property at https://www.thameswater-propertysearches.co.uk/ . Or... take a trip down to your local authority offices and have a look at their sewer maps.
These maps may not tell you exactly where and what the pipes are. So.......
We suggest getting the professionals in and paying for a CCTV drainage survey. Expect to pay only approx. ￡200 for this service.
TIP: This is also a great opportunity to check the condition of your sewer pipes, and could save you ￡￡￡'s in project delays.
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How do I get approval?
You need to fill out a Thames Water Build Over application form. Make sure you get your approval before you start laying your foundations to avoid fines or extra charges.
TIP: If using our services we can coordinate the relevant drawings needed and make the application on your behalf.
How long will my application take to be approved?
It shouldn’t take more than 21 days.
What sort of documents will I need for my application?
What is a self-certified agreement?
If you’re eligible for a self-certified agreement, all you need to do is fill out the online questionnaire and you may start your work immediately (providing your work complies with the description you gave in the online questionnaire).
A self-certified agreement is free of charge.
Want to learn more? Check out our YouTube video below.
Director at PAD | The Designers Choice
1 年So many don't take this into consideration sharing insights like this help everyone especially the general public who may not have thought of it.
Land and Acquisitions Director at XP Property
1 年Aura Architecture really helped me on my personal home extension! Tricky business if you don't know what you are doing. Thanks Team