Case Study · Estate Agent Partnership
Our Damp Proofing Partnership with Connells Estate Agents
When damp is flagged on a sale or let, it stalls the deal. Here is how we became the damp proofing partner Connells rely on to survey, diagnose and treat damp across their London portfolio, and keep properties moving.
Written by Sam Fitzgerald, Founder & Surveyor

Connells Estate Agents
Estate agency & lettings
London property portfolio
Modern & period homes
Surveys, damp proofing, ventilation
Scheduled around viewings & tenancies
The Background
Connells, one of the UK’s well-known estate agencies, needed a damp proofing partner who understood London’s housing stock, from modern flats to period terraces, and could be relied on across a steady stream of properties. For an agent, damp is rarely just a building problem: it is a deal problem. Flagged on a survey, it can trigger a mortgage retention, knock thousands off an offer or stall a let entirely.
They wanted a single, trusted specialist who could survey quickly, report clearly, and treat correctly, without holding properties off the market any longer than necessary.
The Challenge
How the Partnership Works

The Value to Connells
Why It Matters for Agents
Damp picked up in a sale or let survey is one of the most common reasons a transaction slows down or falls through. Having a vetted damp specialist on call, one who can get out quickly, diagnose the real cause, report it clearly and treat it correctly, keeps deals moving and protects the agent’s reputation with their clients. That is the role we play for Connells, and the same way we work with other agents, landlords and property managers through our damp proofing service.
Are You an Estate or Letting Agent?
We work with agents, landlords and property managers who need a dependable damp partner. It is worth a conversation if you have:
Get in touch to talk about a damp proofing partnership for your properties.
Frequently Asked Questions
Can you survey a property quickly when damp is flagged on a sale?
Yes. Fast turnaround is central to how we work with agents, so a flagged property can be surveyed, reported on and treated without holding up the transaction.
Do you provide damp reports for mortgage or survey purposes?
Yes. We provide clear, professional damp reports that set out the cause and the recommended treatment, which buyers, sellers and lenders can rely on.
Do you work with landlords and letting agents as well as estate agents?
Yes. We work with estate agents, letting agents, landlords and property managers who need a dependable damp partner across their properties.
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Estate or letting agent?
Let’s talk about a damp proofing partnership that keeps your properties dry, compliant and market-ready.

Sam Fitzgerald is the founder of Advanced Damp and a working damp and structural waterproofing surveyor with over 12 years of experience diagnosing and treating moisture problems in residential and commercial properties across London and the South East. He is FODCS certified (a Federation of Damp Certified Surveyor) and a member of the Federation of Damp. His hands-on work covers rising damp, penetrating damp, condensation, basement waterproofing to BS 8102, and thermal imaging surveys, and he has personally completed over 400 damp surveys across properties of every type and age. Everything he writes draws directly from jobs he has carried out. He does not write about treatments, products or causes he has not dealt with first-hand in the field.


