London & Surrey’s
Damp, Mould & Leak
Specialists
Our surveyors find the problem and prove it in writing. Repairs are quoted separately, so the diagnosis stays independent. Clear evidence-based reports for landlords, property managers and insurance-related decisions.
Detection, Diagnosis & Reporting
Independent investigation and reporting first. Once the cause is confirmed, repairs are quoted separately through our team or a contractor you choose.
Damp Proofing
Rising damp, penetrating damp and condensation. Independent surveys and long-term waterproofing treatment.
Mould Treatment
Professional biocidal mould removal. We treat the moisture cause, not just the visible surface. reports suitable as supporting evidence for housing, landlord or compliance matters.
Leak Detection
Thermal imaging, acoustic detection and tracer gas. Any hidden leak found without unnecessary damage.
CCTV Drainage
HD camera surveys identifying blockages, root intrusion and collapsed pipes. Full written report and video.
Central Heating
Hidden heating leaks found without lifting floors. Pressure-loss testing and precise leak location.
Insurance Reports
Independent trace and access investigations. Insurance-ready written reports; ask about report timing when you book.
One Investigation.
Clear Answers.
Many companies that diagnose damp or leaks also sell the repair, so the report tends to grow to fit the quote. We don’t work that way.
Our engineers investigate, prove the cause and give you a written repair scope. Repairs are then quoted separately, through our team or any contractor you choose, so our findings stay independent.
- Damp diagnosis: rising, penetrating and condensation
- Leak detection using thermal imaging and tracer gas
- CCTV drainage surveys
- Central heating leak detection and pressure testing
- Wet rot, dry rot and timber inspections
- Professional reports for landlords, councils and insurers
Are You Compliant?
Since October 2025, social landlords must act on emergency hazards within 24 hours, investigate damp and mould within 10 working days, and provide a written summary within 3 working days. Our surveyors investigate and our reporting team prepares a clear written report of the findings.
Independent Survey Report
Full written survey with moisture readings, photos and remediation plan. Prepared to the standard councils and housing associations require.
Written Report After the Visit
The written report follows the visit. Ask about report timing when you book, so you can plan around the 10-working-day investigation requirement.
Legal-Format Reports
Formatted for Housing Ombudsman complaints, local authority escalations and legal proceedings.
Repair-Ready Scope
Our report gives you a repair scope that any contractor, including our team, can price and work from.
Why Customers Choose DML
Real investigations and written reports from one team.
10/10 on Checkatrade, based on 6 reviews
What our Checkatrade customers say
Leak detection and mould treatmentLeak detection and mould treatment There was a horrible smell coming from my kitchen called damp mould leak How to trace an access carried out they repaired the leak and my insurance paid me back. They also treated the mould that I had.
Very happyGreat customer service
Mould treatmentGreat service , the guy who came was very informative and helpful. Have already recommended this company to a friend of mine who is experiencing similar issues at home.
leak detectionI had a leak in my living room underneath the floorboards which they were able to found with minimal damage and it also put everything and repaired it. thank you
Water leaking and mould treatmentWe had a leak repair done recently and after getting several plumbing quotes, this company was by far the cheapest. They arrived on time, quickly carried out the leak detection, found the source of the water leak, and fixed it the same day. Since the repair, we’ve treated the mould in one of the bedrooms that had been caused by the leak, and everything is now sorted. Professional, efficient, and great value for money. Highly recommend for anyone needing reliable plumbing services or leak repairs.
Registered UK company
Damp - Mould - Leak Detection Ltd · No. 16310132
Fully insured
London & Surrey
Local teams across London and Surrey
Written reports
Every investigation documented, for landlords and insurers
Start to finish
One company from investigation to report to repair
REAL JOB
REAL JOB
REAL JOB
Trusted by homeowners, landlords, property managers and insurers across London & Surrey.
Recent investigation case studies are being added from completed DML jobs.
One team, the report each of you needs
From homeowners to housing teams, we investigate the cause, document it clearly, and fix it.
Ready to Fix the Problem?
Surveys available across London and Surrey. Urgent cases are prioritised.
Last reviewed: 27 October 2026. Independent investigation and written reports. Repairs are quoted separately.