Building over or near a sewer

Last reviewed:

Did you know we're legally responsible for more than 100,000 kilometres of public sewers? That’s enough to lap the world three times.

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

Help and advice

If you’re unsure whether you need our approval or you’ve received a letter from us about your building works, you can find out more in this section.

Get help and advice

Getting approval

Discover the steps involved in getting approval, what you need to do and how long the process will take

Step-by-step guide

Submit your application

You can make an application online or by post.

Apply now

Make a payment

Find out if you’re eligible for an online discount and discover other ways to pay.

Make a payment