What is Rare Plumbing Website?

A bespoke digital atelier providing precision engineering and climate control services for London's most discerning luxury estates.

How do you find a leak without digging up my floor or garden?

We use acoustic sensors, CCTV drain cameras and thermal imaging to pinpoint the exact source of a leak non-invasively. In most cases we can identify the leak location to within 30cm without any excavation or damage to your property.

How much does a leak detection survey cost?

Survey costs depend on the size of the property and the suspected leak type. We provide a fixed price before starting any work — call 020 7458 4949 for a quote based on your situation.

Can you provide a report for my insurance claim?

Yes. We provide a detailed written report with photos and findings that most insurers accept as supporting evidence for a leak-related claim.

How accurate is acoustic leak detection?

Acoustic detection is highly accurate for underground and in-wall pipework, typically pinpointing the leak to within 30cm. We combine it with thermal imaging and pressure testing for the most reliable result.

What happens once you find the leak?

We explain exactly what we found, the likely cause and repair options with a fixed price. Most leaks can be repaired the same day once located.

020 7458 4949

020 7458 4949 Book Now

Boiler Repairs Plumbing Underfloor Heating Central Heating Combi Boiler Install Power Flushing Smart Thermostats Air Conditioning PPM Maintenance

Professional Detection

Water Leak Detection in London

Detect hidden leaks before they damage your home. Acoustic sensors, CCTV surveys, thermal imaging. Pinpoint accuracy. Fixed pricing.

020 7458 4949 Book Survey

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Available 24/7. Gas Safe registered engineers.

Acoustic Sensors

Pinpoint hidden leaks

CCTV Surveys

Drain & pipe inspection

Same-Day Diagnosis

Quick turnaround

Fixed Pricing

No hidden charges

Leaks hidden in walls and underground pipes

A small leak in buried pipework can waste thousands of litres of water and damage your property's structure before you notice. RARE engineers use advanced acoustic sensors, CCTV cameras, and thermal imaging to locate hidden leaks without excavation.

We pinpoint the exact location, explain the damage, and provide repair options. Most leaks are fixed the same day.

Signs of hidden water leaks

Rising water bills

Sudden increase with no change in usage

Damp patches on walls/floors

Moisture appearing without visible cause

Soft ground or subsidence

Lawn becomes soggy or floors crack

Mould growth

Black mould appears despite cleaning

Musty smells

Unpleasant odours from under floors

Boiler losing pressure

System repeatedly needs topping up

Our detection methods

Acoustic Leak Detection

Sensitive microphones detect the sound of water escaping from pipes. Accurate to within 30cm for underground leaks.

CCTV Drain Survey

High-definition camera inspects pipes from inside. Detects cracks, breaks, tree root ingress, and joint failures.

Thermal Imaging

Infrared camera detects temperature changes caused by water flow or moisture. Identifies leaks in walls.

Pressure Testing

System isolation and pressure gauge testing identify where water is escaping from internal pipes.

Leak Detection Service

Professional surveys. Same-day diagnosis. Fixed pricing. No hidden costs.

Call 020 7458 4949 Book Survey

Same-day diagnosis

Pinpoint accuracy

No excavation needed

Fixed pricing

Transparent Pricing

Clear rates — no call-out fee, no surprises

We charge a straightforward hourly rate with no separate charge for attending. The clock starts when the engineer arrives — not before. Any parts needed are quoted transparently before work begins, so you'll always know the cost upfront.

£150/hr + VAT

No call-out fee · Minimum 1 hour

Standard rate (Mon–Fri, 8am–6pm)£150/hr + VAT

Out-of-hours (evenings & weekends)£195/hr + VAT

Bank holidays (incl. Christmas)£275/hr + VAT

Replacement partsQuoted before work begins

No charge for attending — you only pay for time on site

Fixed quote before any parts are fitted

RARE members save 10% on standard rates

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FAQ

Leak Detection Questions

Still have questions?

Leak detection — related guides

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Trace & repair ceiling leaks

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Restore heating efficiency

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PPM Membership

Annual servicing & priority response

Underfloor Heating

Install, repair & controls

Reviewed by RARE Plumbing London Engineering Team

Gas Safe Registered Heating Engineers · Reviewed 28 August 2026