Pre-Build Drain Inspection & Analysis
CCTV Build Over Surveys
Planning an extension or new build? RAW Services provides professional CCTV build over surveys to ensure your build complies with local water authority regulations.
Water Authority Compliance
Essential For Planning Permission
If your proposed extension or new build is located within 3 meters of a public sewer or drain, checking with your local water authority is a must. You will likely need a specific agreement to proceed.
RAW Services assists this process by conducting a pre-construction CCTV camera survey to check the location, flow, and condition of the sewer, helping you secure your Build Over Agreement quickly, easily and with peice of mind.
Ensuring Structural Integrity
Before & After Protection
The process isn't just about getting permission to start, it's about ensuring safety when you finish. We conduct two surveys, one before work begins to identify existing issues, and another after completion to confirm the construction works caused no damage.
This comprehensive approach satisfies the water authority and protects your property from future drainage liabilities.
Build Over CCTV Surveys FAQ
What is a Build Over Drain Survey?
A build-over drain survey is a specialised CCTV inspection of existing drainage pipes located beneath a property’s proposed construction area, such as a home extension or new build. It ensures the pipes are properly located, structurally sound, and safe to build over.
When do I need a Build Over Survey?
You typically need this survey if you are planning construction works within 3 meters of a public sewer or drain. It is a requirement by local water authorities to ensure that your new building work does not damage the existing sewage infrastructure.
What is the difference between a pre-construction and post-construction survey?
The process involves two separate surveys. The pre-construction survey is carried out before work begins to identify the location and condition of the sewer. The post-construction survey is conducted after the building work is finished to confirm that the pipes were not damaged during the construction process.
How do I get a Build Over Agreement?
To get an agreement, you must submit an overview of your project plans to your local water authority. Based on these plans and the results of your pre-construction CCTV survey which will check the condition and flow of the sewer, the authority will issue the agreement outlining the necessary conditions for your build.
Do I need an agreement if the drains are private?
If all the drains involved in your project are private and do not connect to or impact a public sewer, you may not need a formal build-over agreement. However, we always recommend checking with your local water authority to confirm before starting work.
Why is this survey required?
Local water authorities require these surveys to protect the public sewage network. If a new extension damages a public sewer, it can cause blockages, leaks, and environmental issues. The survey protects both the water authority's assets and your property from future legal or structural problems.
