The survey starts above ground
The engineer asks what problem you have and checks available manholes, gullies and other access points. They may run water to see which route each fitting uses.
Access can change the survey. A hidden or seized cover may limit the first visit, while a clear inspection chamber makes the work faster.
The drain may need cleaning first
A camera cannot give a clear structural view through thick grease, silt or sewage. The drain may need rodding or jetting before inspection.
Cleaning is not a trick to add work. It creates a view of the pipe wall. Ask whether cleaning is included in the quote.
The camera records the pipe
A waterproof camera head is pushed through the drain on a flexible cable. The engineer watches a live monitor and records notable defects and their distance from the access point.
The survey can show cracks, holes, roots, open joints, scale and standing water. It can also confirm that a repaired section is clear.
Not every mark needs repair
Underground drains are not spotless. Light staining or a small amount of scale may only need monitoring. The report should separate minor observations from defects that affect flow or structure.
A useful explanation links each finding to a practical next step. It should not use alarming language where routine maintenance is enough.
Reports vary by purpose
A fault-finding camera check may give a short recording and verbal explanation. A home-buyer survey usually needs a written condition report, defect locations and clear limitations.
Tell the company whether the report is for a purchase, insurer, landlord, build-over project or repair quote. The purpose shapes the scope.
Questions to ask before booking
Confirm which drains will be inspected and whether footage, cleaning and a written report are included. Ask what happens if a blockage prevents the camera moving forward.
- Is cleaning included?
- Will I receive the recording?
- Does the report mark defect distances?
- Are all accessible private drains covered?
- Will repair prices be separate?