---
title: Commercial Leak Detection Services in London | Non-Invasive
description: Providing specialist commercial water leak detection services to buildings, helping organisations identify the true source of water ingress quickly and accurately.
---

[![White logo - no background](https://www.jag-ps.co.uk/hs-fs/hubfs/White%20logo%20-%20no%20background.png?width=140&height=60&name=White%20logo%20-%20no%20background.png "White logo - no background")](https://www.jag-ps.co.uk/)

[![Color+logo+-+no+background](https://www.jag-ps.co.uk/hs-fs/hubfs/Color+logo+-+no+background.webp?width=164&height=70&name=Color+logo+-+no+background.webp "Color+logo+-+no+background")](https://www.jag-ps.co.uk/)

- About 
    - [About us](https://www.jag-ps.co.uk/independant-damp-surveyor)
    - [Meet the team](https://www.jag-ps.co.uk/meet-the-team)
- Services
    - [Damp & Mould Surveys](https://www.jag-ps.co.uk/damp-and-mould-surveys)
    - [Air Quality & Surface Testing (PRV)](https://www.jag-ps.co.uk/commercial-air-quality-testing)
    - [Water Restoration](https://www.jag-ps.co.uk/water-damage-restoration-service)
    - [Commercial Leak Detection](https://www.jag-ps.co.uk/commercial-water-leak-detection-services)
    - [Legal Disrepair Surveys](https://www.jag-ps.co.uk/damp-disrepair-specialist)
- Sectors
    - [Social Housing](https://www.jag-ps.co.uk/damp-survey-for-housing-development)
    - [Private Landlords & Letting Agents](https://www.jag-ps.co.uk/damp-survey-for-landlords)
    - [Facilities Management](https://www.jag-ps.co.uk/commercial-proprty-damp-survey)
    - [High Net Worth Individuals](https://www.jag-ps.co.uk/high-value-properties)
- Resources
    - [News](https://www.jag-ps.co.uk/news)
    - [Accreditations / Partners Page](https://www.jag-ps.co.uk/accreditations-and-trusted-partners)
    - [Contact](https://www.jag-ps.co.uk/contact-us)

More results

[![\<p style="font-weight: normal;"\>Request a Survey\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945745608.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLKoHrQ1EDj3wxstPkjat5FoaGIdXPYsfH3WWapkqPtpqiw3iZGc%2Bh%2BCdYr8%2B3Ryo11Noxh6BzO9ZLYLekkvhz9HSrcJkUbTH28jvxWj%2FgXiwi9P2rCQkkJdZmXYR6Fs7X0KfE8ZkZyfsHjSskkY%2BOUdAtPaC%2FdZifcdoCq%2FQRunr%2B%2BAq2AtVMZhuan4&webInteractiveContentId=401945745608&portalId=147351228)

[![\<p style="font-weight: normal;"\>Request a Survey\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945745608.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLKoHrQ1EDj3wxstPkjat5FoaGIdXPYsfH3WWapkqPtpqiw3iZGc%2Bh%2BCdYr8%2B3Ryo11Noxh6BzO9ZLYLekkvhz9HSrcJkUbTH28jvxWj%2FgXiwi9P2rCQkkJdZmXYR6Fs7X0KfE8ZkZyfsHjSskkY%2BOUdAtPaC%2FdZifcdoCq%2FQRunr%2B%2BAq2AtVMZhuan4&webInteractiveContentId=401945745608&portalId=147351228)

[![\<p style="font-weight: normal;"\>Request a Survey\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945745608.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLKoHrQ1EDj3wxstPkjat5FoaGIdXPYsfH3WWapkqPtpqiw3iZGc%2Bh%2BCdYr8%2B3Ryo11Noxh6BzO9ZLYLekkvhz9HSrcJkUbTH28jvxWj%2FgXiwi9P2rCQkkJdZmXYR6Fs7X0KfE8ZkZyfsHjSskkY%2BOUdAtPaC%2FdZifcdoCq%2FQRunr%2B%2BAq2AtVMZhuan4&webInteractiveContentId=401945745608&portalId=147351228)

- About

    - [About us](https://www.jag-ps.co.uk/independant-damp-surveyor)
    - [Meet the team](https://www.jag-ps.co.uk/meet-the-team)
- Services

    - [Damp & Mould Surveys](https://www.jag-ps.co.uk/damp-and-mould-surveys)
    - [Air Quality & Surface Testing (PRV)](https://www.jag-ps.co.uk/commercial-air-quality-testing)
    - [Water Restoration](https://www.jag-ps.co.uk/water-damage-restoration-service)
    - [Commercial Leak Detection](https://www.jag-ps.co.uk/commercial-water-leak-detection-services)
    - [Legal Disrepair Surveys](https://www.jag-ps.co.uk/damp-disrepair-specialist)
- Sectors

    - [Social Housing](https://www.jag-ps.co.uk/damp-survey-for-housing-development)
    - [Private Landlords & Letting Agents](https://www.jag-ps.co.uk/damp-survey-for-landlords)
    - [Facilities Management](https://www.jag-ps.co.uk/commercial-proprty-damp-survey)
    - [High Net Worth Individuals](https://www.jag-ps.co.uk/high-value-properties)
- Resources

    - [News](https://www.jag-ps.co.uk/news)
    - [Accreditations / Partners Page](https://www.jag-ps.co.uk/accreditations-and-trusted-partners)
    - [Contact](https://www.jag-ps.co.uk/contact-us)

[![\<p style="font-weight: normal;"\>Request a Survey\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945745608.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLKoHrQ1EDj3wxstPkjat5FoaGIdXPYsfH3WWapkqPtpqiw3iZGc%2Bh%2BCdYr8%2B3Ryo11Noxh6BzO9ZLYLekkvhz9HSrcJkUbTH28jvxWj%2FgXiwi9P2rCQkkJdZmXYR6Fs7X0KfE8ZkZyfsHjSskkY%2BOUdAtPaC%2FdZifcdoCq%2FQRunr%2B%2BAq2AtVMZhuan4&webInteractiveContentId=401945745608&portalId=147351228)

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J A Gilbert Property Services Limited  
Index House  
St George’s Lane  
Ascot  
SL5 7ET

# A Specialist Approach to Leak Detection

[![\<p style="font-weight: normal;"\>Request a Survey\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945745608.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLKoHrQ1EDj3wxstPkjat5FoaGIdXPYsfH3WWapkqPtpqiw3iZGc%2Bh%2BCdYr8%2B3Ryo11Noxh6BzO9ZLYLekkvhz9HSrcJkUbTH28jvxWj%2FgXiwi9P2rCQkkJdZmXYR6Fs7X0KfE8ZkZyfsHjSskkY%2BOUdAtPaC%2FdZifcdoCq%2FQRunr%2B%2BAq2AtVMZhuan4&webInteractiveContentId=401945745608&portalId=147351228)

### Trusted by leading organisations across housing, commercial & public sectors.

![L&Q](https://www.jag-ps.co.uk/hubfs/l%26q.svg)

![Enfield](https://www.jag-ps.co.uk/hubfs/Enfield.svg)

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![Raven](https://www.jag-ps.co.uk/hubfs/Raven.svg)

![Peabody](https://www.jag-ps.co.uk/hubfs/Peabody.svg)

![Uttlesford](https://www.jag-ps.co.uk/hubfs/Uttlesford.svg)

![Sutton](https://www.jag-ps.co.uk/hubfs/Sutton.svg)

## Commercial Leak Detection Specialists

We provide specialist leak detection services for commercial buildings, helping organisations identify the true source of water ingress quickly and accurately.

In complex buildings, leaks are rarely straightforward. Without proper investigation, issues can be misdiagnosed — leading to repeated failures, disruption and unnecessary cost.

![JAG using a tool to diagnose moisture in a commercial building](https://www.jag-ps.co.uk/hs-fs/hubfs/JAG-website-image.webp?width=2000&height=1000&name=JAG-website-image.webp "JAG using a tool to diagnose moisture in a commercial building")

## The Challenges You’re Facing

We are typically called in when:

![JAG carrying our leak detection in office building](https://www.jag-ps.co.uk/hs-fs/hubfs/Untitled%20design%20(1).webp?width=1563&height=1250&name=Untitled%20design%20(1).webp "JAG carrying our leak detection in office building")

### The source of a leak is unknown or disputed

### Previous investigations have failed

### Water ingress is affecting multiple areas or units

### There is pressure to resolve issues quickly in operational environments

### Insurance or compliance requires accurate reporting

## A Specialist Approach to Leak Detection

### Identifying where water is entering

### Understanding how it is spreading

### Differentiating between possible causes

### Providing clear, evidence-based conclusions

[![\<p style="font-weight: normal;"\>Request a Survey\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945745608.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLKoHrQ1EDj3wxstPkjat5FoaGIdXPYsfH3WWapkqPtpqiw3iZGc%2Bh%2BCdYr8%2B3Ryo11Noxh6BzO9ZLYLekkvhz9HSrcJkUbTH28jvxWj%2FgXiwi9P2rCQkkJdZmXYR6Fs7X0KfE8ZkZyfsHjSskkY%2BOUdAtPaC%2FdZifcdoCq%2FQRunr%2B%2BAq2AtVMZhuan4&webInteractiveContentId=401945745608&portalId=147351228)

## Our Leak Detection Methods

We use a combination of advanced techniques, including:

---

### Thermal imaging

---

### Acoustic detection

---

### Pressure testing

---

### Moisture mapping

---

### Building fabric assessment

---

## Designed for Commercial Environments

We support:

### Facilities and estate management teams

### Commercial property owners

### Multi-site portfolios

### Retail, office and operational buildings

Our work is delivered with a focus on **speed, accuracy and minimal disruption**.

FULLY ACCREDITED & TRUSTED

## Suitable for compliance, legal and insurance use.

[JAG](https://www.jag-ps.co.uk)operates within recognised quality, technical and procurement frameworks. Our reports are written to evidential standard and routinely relied upon by housing providers, insurers and legal teams.

  Independent — no remediation contracting conflict

  Authored by experienced specialists

  Defensible methodology and chain of evidence

![BloomAccreditedSupplier\_RoundCorners](https://www.jag-ps.co.uk/hs-fs/hubfs/BloomAccreditedSupplier_RoundCorners.png?width=165&height=70&name=BloomAccreditedSupplier_RoundCorners.png)

![Dewpoint](https://www.jag-ps.co.uk/hubfs/Dewpoint.svg)

![CHAS](https://www.jag-ps.co.uk/hubfs/CHAS.svg)

![IICRC](https://www.jag-ps.co.uk/hubfs/IICRC.svg)

WHERE WE COVER

## Covering key cities across England & Wales — with portfolio coverage nationwide on instruction.

  Portsmouth

  Southhampton

  Oxford

  Birmingham

  Bristol

  Brighton

  Winchester

  London & the Home Counties

  Cardiff

  Swindon

## Need clarity on a moisture issue?

Speak to a specialist and get clear next steps. Most engagements begin with a brief, no-obligation scoping conversation.

[![\<p style="font-weight: normal;"\>Request a Survey\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945745608.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLKoHrQ1EDj3wxstPkjat5FoaGIdXPYsfH3WWapkqPtpqiw3iZGc%2Bh%2BCdYr8%2B3Ryo11Noxh6BzO9ZLYLekkvhz9HSrcJkUbTH28jvxWj%2FgXiwi9P2rCQkkJdZmXYR6Fs7X0KfE8ZkZyfsHjSskkY%2BOUdAtPaC%2FdZifcdoCq%2FQRunr%2B%2BAq2AtVMZhuan4&webInteractiveContentId=401945745608&portalId=147351228)

[![\<p style="font-weight: normal; font-size: 18px;"\>Request a Call with a Specialist\</p\>](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/147351228/interactive-401945848010.png)](https://www.jag-ps.co.uk/hs/cta/wi/redirect?encryptedPayload=AVxigLLkzCwO0DmdeZVA8E7RBZ%2FLEOLDU30niFC3cZPd03r%2F2JTmmX0BKs78oXSZ%2Becedi%2FDP2YnnMXWfYJkLnuPWYMU1w%2FaQ03NLYrUdXM1%2Bkcpwvb2e7GgQoXwnNDQfnyfS3vpDSaUUsLWmdo7w3XlJk73Tspt2oNZWILFXnRnu%2F43XYHHoqzHO1Ennba6cK0eJsRIopM%3D&webInteractiveContentId=401945848010&portalId=147351228)

#### [![White logo - no background](https://www.jag-ps.co.uk/hs-fs/hubfs/White%20logo%20-%20no%20background.png?width=180&height=77&name=White%20logo%20-%20no%20background.png)](https://www.jag-ps.co.uk/)

J A Gilbert Property Services Limited, Index House, St George’s Lane, Ascot, SL5 7ET

  [01344578851](tel:01344578851)

VAT Number - GB420008069

Company Number - 14221295

 Services

- [Damp & Mould Surveys](https://www.jag-ps.co.uk/damp-and-mould-surveys)
- [Air Quality & Surface Testing (PRV)](https://www.jag-ps.co.uk/commercial-air-quality-testing)
- [Water Restoration](https://www.jag-ps.co.uk/water-damage-restoration-service)
- [Commercial Leak Detection](https://www.jag-ps.co.uk/commercial-water-leak-detection-services)
- [Legal Disrepair Surveys](https://www.jag-ps.co.uk/damp-disrepair-specialist)

 Sectors

- [Social Housing](https://www.jag-ps.co.uk/damp-survey-for-housing-development)
- [Private Landlords & Letting Agents](https://www.jag-ps.co.uk/damp-survey-for-landlords)
- [Facilities Management](https://www.jag-ps.co.uk/commercial-proprty-damp-survey)
- [High Net Worth Individuals](https://www.jag-ps.co.uk/high-value-properties)

Resources

- [About Us](https://www.jag-ps.co.uk/independant-damp-surveyor)
- [Our Team](https://www.jag-ps.co.uk/meet-the-team)
- [Accreditations](https://www.jag-ps.co.uk/accreditations-and-trusted-partners)
- [Our Team](https://www.jag-ps.co.uk/meet-the-team)

Legal

- [Terms](https://www.jag-ps.co.uk/terms-conditions)
- [Privacy](https://www.jag-ps.co.uk/privacy-policy)
- [Cookies](https://www.jag-ps.co.uk/cookie-policy)

Copyright © 2026 J A Gilbert Property Services Limited. Designed and developed by [JDR Group](http://www.jdrgroup.co.uk).

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- [Privacy](https://147351228.hs-sites-eu1.com/privacy-policy)
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