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Damp & Mould Surveys for Landlords & Letting Agents

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

We help landlords and property managers diagnose and resolve damp and mould issues quickly, providing clear reports, professional support, and peace of mind .

Whether you're managing a single property or a large portfolio, moisture issues can quickly become time-consuming, costly, and stressful — especially when tenants are involved.

Private landlords

The Challenges You’re Facing

You’re likely dealing with: 

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Tenants reporting mould or damp repeatedly

Uncertainty around whether the issue is structural or lifestyle-related

Concern about council involvement or compliance

Contractors giving vague or inconsistent advice

Unexpected costs from failed repairs

Without clear answers, these issues can escalate into disputes, delays and further expense. 

Clear Answers, Fast

As moisture and mould specialists, we provide a straightforward, independent diagnosis. We tell you: 

What is causing the issue

Whether it is structural or environmental

What needs to be done to fix it properly

This allows you to act quickly, protect your property, and avoid unnecessary costs. 

SPECIALIST SERVICES

Our Core Services for Landlords & Agents

Damp & Mould Surveys

Damp & Mould Surveys

Independent diagnosis of persistent or recurring damp and mould in residential and commercial buildings.

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Mould Air Quality & Surface Testing

Mould Air Quality & Surface Testing

Quantitative microbial sampling and IAQ analysis through accredited laboratory partners.

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Water Escape

Water Escape

Post-escape moisture mapping, drying validation and reinstatement oversight.

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Commercial Leak Detection

Commercial Leak Detection

Non-destructive trace and access using thermal, acoustic and tracer-gas methodologies.

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Legal Disrepair Surveys

Legal Disrepair Surveys

Expert reports for housing disrepair claims, FFHH, Awaab’s Law and insurance proceedings.

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Request a Call with a Specialist

Request a Call with a Specialist

Want to talk through your issues with our team? Give us a call today or get in touch through our forms

Call now

When to Instruct JAG

  • Tenant reports mould or damp
  • Issue returns after previous work
  • Preparing property for re-let
  • Concern around compliance or complaints
  • Need evidence for disputes or insurers
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What You Receive

A full written report
A full written report
Photos of affected areas
Photos of affected areas
Moisture and humidity readings
Moisture and humidity readings
Identified causes and contributing factors
Identified causes and contributing factors
A schedule of works
A schedule of works
Advice suitable for tenants
Advice suitable for tenants
Simple explanations that reduce misunderstandings
Simple explanations that reduce misunderstandings
A resident/tenant Q&A
A resident/tenant Q&A

How We Help You Manage Your Properties

Reduce disputes and improve tenant relationships

Independent findings build confidence and reduce suspicion. Tenants are more willing to cooperate when the assessment is clearly unbiased.

Avoid unnecessary spending

Only the repairs that your survey identifies as responsible for the issue are recommended. This supports cost control and protects landlords from over treatment.

Support compliance and documentation

Reports help demonstrate that you have responded reasonably to tenant concerns and acted using professional guidance.

Protect building fabric

By addressing the underlying cause, you prevent long term deterioration of plaster, flooring, timber and structural elements.

Improve operational efficiency

Letting agents benefit from clear processes, reduced callbacks and fewer emergency maintenance visits.

Working in Tenanted Homes

We understand the importance of working respectfully and carefully in rented properties.

Our team:

  • Communicates clearly with tenants,
  • Works around resident schedules where possible,
  • Explains findings in calm, simple language,
  • Avoids judgement and blame,
  • Uses safe methods that do not disrupt daily life.

We can also liaise directly with tenants to arrange appointments, which saves significant time for letting agents and landlords.

A Realistic Example

A tenant reports mould in a bedroom despite previous cosmetic cleaning. Our surveyor attends promptly and identifies cold bridging caused by missing insulation and poor ventilation.

We treat the mould safely, install an upgraded extractor fan, address the cold spot and provide simple advice for managing humidity.

The tenant feels listened to and reassured, and the landlord no longer receives repeated complaints.

FAQs

Do tenants need to be present during the survey?

Not always. We can arrange access directly with them if permission is given.

Do tenants need to leave during treatment?

No. Our treatment is safe for occupied homes.

Do you offer discounts for multiple properties?

Yes. Portfolio pricing is available for letting agents and landlords with several properties.

Need professional support with a damp or mould issue in a rental property?

What Our Clients Say

Don't just take our word for it - hear from homeowners, housing associations, and property managers we've helped.

“I had a call from our disrepair contractor. I sent them your surveys to quote from. They wanted me to pass on theirthanks, as your surveys are very high quality and have all the information needed. This makes their job easier,compared to other reports they receive.”
Lee Madden
Damp, Mould & Disrepair Team
“We worked closely with JAG on an Ombudsman level case. JAG carried out the initial damp and mould survey, whichallowed our contractor to carry out root cause remedial works. We found that the resident was still suffering with a cough,carrying out a post inspection survey, air test and the use of IoT sensor data, JAG helped us identify potential issues. Wewere then able to educate and support our residents and satisfy the Ombudsman.”
Michael Ryan
Assistant Director of Property and Estate Services
"We have worked with JAG over an 18-month period, in the build-up to Awaab’s Law. JAG and James’ knowledge and input were invaluable. We are all learning every day, and having JAG as our damp and mould partner has made a difference to how we look at damp and mould when it comes to our homes and prioritising our residents’ health.”
Lisa Turner
Head of Repair Operations - Peabody
FULLY ACCREDITED & TRUSTED

Suitable for compliance, legal and insurance use.

JAG 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
Dewpoint
CHAS
IICRC
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.

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