CCTV and Drainage Surveys: Do They Fall Under the Party Wall Act?
Generally not. A CCTV drainage survey looks at pipes and does not alter a party wall, so the Party Wall etc. Act 1996 does not normally apply. Repairs that follow may need notice if they involve excavation near a neighbouring building.
Why a survey is different
The Act regulates building work. A camera pushed through a drain from an existing access point does not cut, raise, or excavate anything. It leaves the structure as it was.
What if access needs digging
Sometimes there is no access chamber and the surveyor has to lift a cover or open the ground. If that opening is near a neighbouring building and deep enough to meet the Section 6 tests, notice may be required. The tests are 3 metres and deeper than the neighbour's foundations, or 6 metres on the 45-degree line.
Repairs after the survey
Relining a pipe from inside is usually not excavation. Digging up and replacing a section of pipe is. If that dig is close to the neighbour's foundations, or runs through a shared wall, plan for notices.
Shared drains and permission
If the drain is shared or crosses your neighbour's land, you may need their agreement to enter. Water company rules also apply. See the guidance on shared drainage.
Sharing the results
If the survey finds defects that affect your neighbour, tell them. Written findings help if a dispute arises. If you are buying a house, ask what work is recommended before you commit.
If the survey is part of a sale, ask the seller for any earlier reports. Repeated surveys rarely add much, but a clear record of known problems helps everyone agree who deals with repairs and when.
Frequently asked questions
Do I need to tell my neighbour about a CCTV survey?
Not legally under the Act, but it is courteous if their land or shared pipes are involved.
Is it different for a flat?
Flats bring lease terms and shared services into play. Read your lease and speak to the managing agent.
Can a survey cause damage?
Rarely. If work does cause damage, the person responsible should put it right.
Related guides
- Shared Drainage and Sewers: Party Wall vs Water Authority Rules
- Understanding Section 6 of the Party Wall Act: Excavation Within 3 or 6 Metres
- Excavations and Foundational Underpinning: Party Wall Rules Explained
- What If My Neighbour's House Has Shallow Foundations and I am Digging Deeper?
Last updated: . This page is general information about the Party Wall etc. Act 1996 (England and Wales). It is not legal advice. Every property and dispute is different, so take advice from a party wall surveyor or a solicitor before you act.