How Much Does Leak Detection Cost in the UK?

What do UK guides say leak detection costs?

Typical UK market range from one published 2026 cost guide: £200 to £600 for non-invasive detection, described as thermal or acoustic tracing. The same guide says London and the South East typically add 10 to 25 percent. The publisher describes its figures as indicative ranges from its own cost model and does not disclose the sample behind them.

Treat that as a rough outline. Guides of this kind are written by commercial publishers, none states how many quotes sit behind a number, and none separates the survey from what comes after it. A trade range of £200 to £600 for locating a leak says little about a leak under a screed that takes a day.

The wide spread has a plain cause. Firms price in at least three ways: by the hour, by the method (a thermal survey, an acoustic survey, a gas run) and by the visit. A cheap-looking hourly rate with a long search can cost more than an expensive-looking flat price.

Why do London visits cost more?

Labour is usually the main reason. One 2026 guide to floor repairs gives a trade range for skilled labour of £180 to £300 per day, with the lower figure typical of parts of the North of England and Wales and the upper figure exceeded in central London and some South East areas, so the regional gap across the trade is large. That is a guide to building trades, not leak detection, but it shows the size of the gap.

Parking, congestion and access to flats add time on top of the rate, and time is what an hourly quote charges for. The same is true of urgent attendance; what out-of-hours adds is priced on its own page, and acoustic detection cost shows how pipe material changes the hours. These costs are real and a London firm cannot avoid them, which is why a national average should not be used as a London budget. The team prices by the hour or by the package, never by a regional average.

How does that compare with our own prices?

The package is £580 to locate a leak in one property, and that total is known before the visit. Standard detection is £180 an hour, and the standard rate is a fixed hourly rate that cannot rise on the day. No VAT is charged.

The full list, including mains, heating, tracer gas and moisture mapping, is on the price pages. The hourly versus package page shows where each hourly rate passes the package, and six worked examples apply it to different jobs.

How do I compare quotes from different firms?

Put every quote on the same footing before comparing numbers. Four questions do most of the work.

• Is the price per hour or for the visit? If hourly, how many hours do they expect, and what happens when the job overruns?
• Which methods are included? A thermal survey alone often will not locate a pipe leak, so ask whether acoustic, gas or pressure testing is part of the price.
• Is there any charge when the leak cannot be located? Ask for the exact wording, because many promises carry exclusions. Ours is set out in the no find, no fee terms.
• Does the quote include a written record of what was found and where, and does it include opening or making good? Many do not include the second.

What a UK average cannot tell you

An average cannot say whether your leak is a ten-minute job on an exposed joint or an all-day search, and it cannot weigh the access problems that make one London flat slower to survey than the house next door. It cannot say whether the source is inside your property, which decides who pays, and it does not include the cost of opening a floor or wall and closing it again. The access and making good page covers that part, and the survey-first comparison shows why locating the leak before opening anything usually costs less than guessing.

Whether a home policy contributes is a separate question: leak detection cost with home insurance explains it, and cover depends on the policy.

For a figure specific to your job, use the cost estimator. It returns the package or an hourly range from five answers and says which applies.

Sources

BestBuilders, burst pipe repair cost guide, updated 30 August 2026, for the non-invasive detection range and the 10 to 25 percent London and South East uplift. BookaBuilderUK, floorboard replacement cost guide 2026 (undated page), for the regional labour comparison. Both are commercial publishers; both were read in October 2026. Our own prices are the published rate card.