Drainage mapping for Thames Water Build Over Agreements, London, Surrey, South East


A Thames Water build over agreement is required for any excavation building  works within 3 metres of a public sewer or drain. Given the density of construction in London and other cities, this will likely mean that any work you intend to undertake to your property, that includes excavations, will likely require Thames Water’s review and consent.

As part of the agreement required, you will need a CCTV Drainage survey to show a drawing illustrating the existing drainage layout. X-Ray Surveys provide this service so please contact us.