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About Letting Agent Leak Detection
Letting Agent Leak Detection, a specialist service from ADI Leak Detection. The people who answer the phone, the engineers who turn up and the company on the invoice are all ADI.
Who ADI is
ADI Leak Detection was started in 2011 by its founder, Adrian, as a specialist leak detection company at a time when most leaks were still found by opening things up. He was an early adopter of non-invasive methods and built the business from a local service into a national one. After Adrian died, ADI Leak Solutions Ltd was formed to carry the company on under the same name and the same principles. It is led today by managing director Monique Dray, who has been with the company for more than ten years.
Today ADI runs more than twenty-five leak investigation engineers across England, Scotland and Wales, supported by an office team in High Wycombe that handles booking, scheduling, reports and customer questions. ADI states that its engineers are all qualified and registered plumbers; it does not offer general plumbing, and it does not repair roofs or building fabric.
ADI's own website carries more than a thousand five-star reviews on Trustpilot; the independent profile showed a TrustScore of 4.7 from 1600+ reviews when we checked on 14 September 2026.
Why letting agents get their own name
A letting agent arranging a leak survey is in the middle of four people: the tenant living with the damp, the landlord paying for the work, the contractor who will fix it and the insurer who may cover it. The questions are different from a homeowner's: who lets the engineer in, does the flat above need to be accessible, who authorises the repair, will the landlord's insurer accept the report.
Letting Agent Leak Detection exists to answer those questions properly, in one place, with real residential jobs as evidence. ADI uses the same approach for other kinds of property it works in regularly. The service, the engineers and the terms are ADI's throughout.
Accreditations, insurance and coverage
The credentials a landlord, a block manager or an insurer usually asks about, as ADI publishes them.
- CIPHE
- Accredited by the Chartered Institute of Plumbing and Heating Engineering. ADI describes itself as one of the only CIPHE-accredited water leak detection specialists in the UK.
- WIAPS
- Registered with the Water Industry Approved Plumbers Scheme, so plumbing work complies with the Water Fittings Regulations.
- WaterSafe
- A WaterSafe-accredited contractor, on the national register of approved plumbing businesses.
- SPATA
- An approved contractor of the Swimming Pool and Allied Trades Association.
- CSCS
- Engineers hold Construction Skills Certification Scheme cards for work on construction sites.
- Insurance
- £5 million public liability insurance.
- Coverage
- England, Scotland and Wales, from engineers based across the regions. Call with the postcode for availability.
- Office hours
- Monday to Friday, 7:30am to 6:30pm. Calls to the office are recorded for quality and training.
The office is where it starts
Every job begins with a conversation. The office team asks about the property, what the tenant has noticed and the access, works out which kind of investigation fits, quotes it, and books the engineer. They stay in the loop through the visit and send the report afterwards. If the landlord, the insurer or a contractor has a question about the findings, they are the people to ring.
Call 0333 567 2621
ADI Leak Detection reviews
Full review on TrustpilotI spoke with Lauren and she was amazing from start to finish. I had a lot of questions, particularly because the work was being covered through my home insurance, and she took the time to clearly explain exactly what the engineer would do, how the process worked and what would be covered. She was incredibly knowledgeable, patient and transparent about everything, including the pricing. […] I would highly recommend ADI Leak Detection.
Full review on TrustpilotGrant was incredible here in Essex from start to finish. He arrived early, and managed to track down a leak in the bathroom that was making its way through into the kitchen. It turned out there were nails in the pipe! […] He was polite, friendly, clearly very experienced and knew exactly what he was doing. He explained what was happening and dealt with the repair professionally and efficiently. Really impressed with the service and would definitely recommend Grant.
Arrange a leak detection survey with ADI
Describe what the tenant has noticed, the type of property and the postcode. The office team will talk through the survey, give you a quote and current availability, and book the engineer.
- Monday to Friday, 7:30am to 6:30pm
- Calls reach ADI Leak Detection's office in High Wycombe. Engineers cover England, Scotland and Wales.