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Build Over Agreements

Thames Water build-over approvals for works near public sewers, secured without derailing the programme.

Build Over Agreements

Building within 3 metres of a public sewer needs a build over agreement from the water company, with drawings showing how the sewer is protected. Miss it, and building control cannot sign the works off.

  • Sewer location check at design stage
  • Foundation design respecting the asset
  • Build over application and drawings
  • Approval coordinated with building control
01

Assess

02

Design & consent

03

Deliver

How do I know if a sewer crosses my garden? +
Water company asset maps show public sewers, and since 2011 many formerly private drains are public. We obtain and interpret the records for your site.
How long does a build over agreement take? +
Straightforward self-certified cases are quick; approved agreements typically take a few weeks. We build it into the programme so it never becomes the critical path.

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A written, fixed-fee quote. No obligation.

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