Drainage Surveys — London & Surrey
Full CCTV drainage surveys with written reports, footage, and defect classification. Trusted by homebuyers, landlords, solicitors, and insurers across London and Surrey.
Our Drainage Survey Services
A drainage survey is a systematic inspection of a property’s entire underground drain network — mapping the layout, assessing condition, identifying defects, and producing a written report. We use push-rod CCTV cameras with high-definition footage for residential properties, and larger robotic crawlers for commercial or main sewer inspections.
📋 Full CCTV Drain Survey
Comprehensive survey of all drain runs with HD footage, drain mapping, WRC-coded defect report, and recommendations. Standard for pre-purchase and insurance purposes.
🏠 Pre-Purchase Drain Survey
The single most important survey before buying a property. Drainage defects are not visible in a standard RICS survey. Our pre-purchase reports give buyers complete peace of mind — or negotiating leverage.
📝 Insurance Survey Report
Drainage survey reports for insurance claims. We document pre-existing conditions and damage evidence to support your claim. Accepted by all major UK insurers and loss adjusters.
🏭 Commercial Drainage Survey
Full drainage surveys for commercial properties, industrial sites, blocks of flats, and housing association portfolios. Includes drain mapping, condition grading, and maintenance scheduling.
What a Drainage Survey Report Contains
- Site plan showing the location of all drain runs and manholes
- CCTV footage of every metre of pipe inspected
- WRC (Water Research Centre) coded defect classification for each issue found
- Written condition assessment with defect severity ratings
- Photographs extracted from CCTV footage at key defect locations
- Recommendations for repair or maintenance, prioritised by urgency
- Estimated repair costs (indicative, not a fixed quote)
Related services: If the drainage survey identifies a leak that is causing damp or mould in your property, our team can move directly to leak detection or full damp surveys without bringing in a third party.
Frequently Asked Questions
What is the difference between a drainage inspection and a drainage survey?
A drainage inspection typically refers to a targeted check of a specific area or problem — for example, inspecting a known blocked section. A drainage survey is a comprehensive assessment of the entire drain network at a property, including mapping, condition grading, written report, and footage. For pre-purchase or insurance purposes, a full drainage survey is required, not just an inspection.
Are drainage surveys recommended before buying a house?
Yes — strongly. A standard RICS survey does not inspect underground drains at all. Drainage defects are among the most commonly missed issues in property purchases, and repairs can cost £1,000–£20,000+. A pre-purchase drainage survey from Damp Mould Leak provides a full CCTV inspection of all underground drains with a written report that can be used in price negotiations.
How much does a CCTV drainage survey cost in London?
A full CCTV drainage survey for a standard semi-detached or terraced house in London or Surrey typically costs £175–£350. Larger properties or those with more complex drainage networks cost more. The report is included in the price. Commercial drainage surveys are priced on a per-site basis — call 0800 054 1524 for an accurate quote.
Can a drainage survey be used for an insurance claim?
Yes. Our drainage survey reports are accepted by all major UK insurers including Aviva, AXA, and Direct Line. The report includes WRC-coded defect classification, HD CCTV footage, photographic evidence, and written recommendations — all required by insurers and loss adjusters to support drainage-related insurance claims.
How long do drainage surveys take?
A standard residential drainage survey takes 1.5–3 hours on site depending on the size and layout of the drainage network. The written report with footage is typically ready within 24–48 hours. We can often attend within 2–3 working days of instruction, with emergency options available.
Get in Touch
Call us or WhatsApp for a fast quote across London and Surrey. We typically respond within 2 hours.