HomeHelp and adviceHome improvements

Building near or over pipes

Building near pipes

If you plan to build over or near any pipework, you’ll need to take certain precautions. The process depends on whether the pipework carries clean water or wastewater.

Building over or near clean water pipes

Homeowners are responsible for water pipes that run within their property boundary — these are called supply pipes.

Building over or near a sewer

If you’re planning to improve your home by extending it, adding a conservatory, annex or garage it’s likely there will be pipes within your land. As well as checking the local authority's Building Regulations, it's important you work with us to make sure the pipework is protected and our access isn't restricted.

Getting approval

Getting approval is a straightforward process. Please note that if you start laying your foundations before we’ve issued approval, additional charges may occur.

We may need to carry out additional surveys for sewers with a diameter over 375mm. This might delay approval. Learn more about the process.

Here’s the process once you have submitted your application:

More information on build over agreements

See details on how we’ll use the information you provide in your application.