Building over an existing drain or sewer doesn’t have to be risky. With Build over or Pre Build CCTV surveys, you can eliminate the possibility of damage to pre-existing pipework and avoid any disruptions. And, if you’re planning an extension on an existing property, the local water authority will require a CCTV drainage survey to be conducted if any building work is taking place near their pipes. With our confidence in our survey methods, you can proceed with your building project without any worry.