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Endorsed by Which? Trusted Traders

JPM Independent Surveyors

Profile thumb jpm

55 Reviews

Opening Hours
Today - 08:00–18:00
  • Monday 08:00–18:00
  • Tuesday 08:00–18:00
  • Wednesday 08:00–18:00
  • Thursday 08:00–18:00
  • Friday 08:00–18:00
  • Saturday 08:00–18:00
  • Sunday 08:00–18:00

What is a Which? Trusted Traders Islington Trading Standards Approved Endorsement?

Which? Trusted Traders has partnered with Islington Trading Standards to create an Islington Trading Standards Approved endorsement. In addition to our standard trading standards assessment, this trader has had a DBS check and is subject to a Trading Standards intelligence check.


I provide specialist damp investigation and timber reports with solutions to fix the problems.

Dampness is often misdiagnosed by contractors.
Quite often the correct solution is simple and inexpensive.


I am not a contractor, I am a surveyor. I do not carry out remedial damp proofing or building works so you can rest assured that my reports are competently impartial.

Experienced qualified independent damp and timber surveyor.
: Dampness
: Condensation
: Mould
: Timber decay
: Woodworm
: Ventilation

I am CSRT qualified and member of;
: Property Care Association (PCA)
: Expert Witness Institute

20+ years experience and fully insured, I provide for home owners, tenants, estate agents, landlords, architects and property pre-purchase.

Covering areas of North London, East London and West Essex.

What we do

  • Damp proofing and timber preservation services

    • Condensation and humidification control
    • Timber treatment services
    • Woodworm treatment
    • Injection damp courses
  • Mould

    • Mould investigation
    • Mould survey
  • Surveyors

    • Building Surveyors
    • Damp proofing surveyors
  • Builders

  • Specialised building trade contractors

  • More Services

    • independent
    • timber
    • rot
    • water damage

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

55 reviews
Customer Service
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Endorsement Reference Knowledgeable and thorough specialist damp surveyor services
Customer Service
My husband and I are in the process of purchasing a property and following a general building survey of the property, damp was detected. To help us fully understand the extend of the issues present, the remedial process and costs etc., we decided that we would instruct a specialist damp surveyor to carry out a specialist survey of the property. We contacted 3 different surveyors enquiring about their availability to conduct a damp survey for us - one of which was JPM Independent Surveyors. Jason replied to us within the hour confirming he could conduct an impartial specialist damp survey for us and he explained his services clearly and in a friendly, approachable manner. In our initial emails to the different surveyors, we expressed urgency with having the survey conducted as soon as possible. Jason picked up on this and fitted our damp survey in for the next day despite being fully booked. By comparison, the 2 other surveyors took 1 week plus to even respond to our initial enquiries! Jason attended the property to conduct the survey on the evening of 9 July 2020 and by mid afternoon on 10 July 2020, we had received from him an in depth report detailing the issues he found at the property together with pictures of those parts of the property were damp issues were identified. In addition details of the remedial works required to address the issues were included in the report. Jason also provided a whole suite of additional documents giving additional information on the works required at the property and detailing the remedial products he recommended in the report itself. The report was extremely well written and easy for a lay person to understand. Since receiving the report, Jason has been on hand to assist us with answering our questions about the remedial works and breaking down which tradesperson is best placed to pick up each aspect of the remedial works required. The whole experience with Jason has been seamless, from the initial enquiry through to the aftercare we have received following receipt of the report. Jason is thorough, professional, reliable and can meet tight timescales. We would thoroughly recommend his services to anyone looking to instruct a pre purchase specialist damp or timber report and will definitely instruct him again in the future should the need arise.
Mrs Thomson, Endorsement Reference Posted on 23/07/2020 , work completed 09/07/2020
Endorsement Reference Damp Survey
Customer Service
Complete Damp Survey Jason was quick to reply and was able to get the survey done in short order. The damp survey covered all areas he could access and a complete report as provided with a quick turnaround (under 24 hours) A few follow up queries were quickly answered This is the second time we have used JMP and would do again.
mulligjr, Endorsement Reference Posted on 16/07/2020 , work completed 09/07/2020
Endorsement Reference Damp Survey
Customer Service
I commissioned JPM to undertake a survey to determine the potential causes of damp in a property I own. The property is currently tenanted and I live in Singapore - as such I need to use vendors that are professional, reliable and trustworthy. JPM were all of these things. The communications from JPM were first class and I was impressed that they went the extra mile to keep me informed and liaise directly with the tenants for access. JPM also took numerous steps to protect both themselves and my tenants from potential impact of COVID-19. Finally, the final report was excellent and contained a number of clear recommendations to fix the issue.
Darrell, Endorsement Reference Posted on 16/07/2020 , work completed 08/07/2020
Endorsement Reference Fast and thorough damp and timber survey
Customer Service
JPM carried out a damp and timber survey for me on the advice of my RICS Home Buyer's report. My wife and I are buying our first home and wanted to have the peace of mind. JPM was fast to respond, quote, and managed to carry out the survey and turn around the report all inside of a week's time. The recommendations on how to fix any issues were also very clear and super helpful.
ryanriley33, Endorsement Reference Posted on 16/07/2020 , work completed 07/07/2020
Professional, trust worthy and experienced
Customer Service
Jason inspected my flat for damp and produced a reliable, evidence-based report which highlighted causes of damp and offered solutions. I wish I had contacted Jason earlier! It would have saved a lot of stress. I have no hesitation in recommending Jason. I will certainly call on his expertise in the future for damp problems.
S. Kumar Posted on 02/07/2018 , work completed 02/07/2018
Very professional
Customer Service
Prompt response, and delivery. Professional approach and detailed report understandable to a layman.
Joanne, London Posted on 17/05/2018 , work completed 17/05/2018
Prompt, Professional, Comprehensive Report.
Customer Service
JPM were incredibly fast in replying to my email, visiting the property (on a weekend) and in sending me my reports. The report was more comprehensive than others which were twice the price! I would recommend JPM to anyone who wants a professional damp survey conducted.
Jessamy, Essex Posted on 06/01/2018 , work completed 06/01/2018
Fast and easy to work with.
Customer Service
I used Jason's services for a damp survey after calling a few firms for quotes. He was responsive and very easy to work with and managed to book me in with just a few days notice. The report was clear and arrived the following day (Sunday) which was enormously helpful. I would definitely recommend Jason and would not hesitate to use his services again.
Anthony Posted on 15/08/2017 , work completed 15/08/2017
Speedy and professional
Customer Service
Jason Mahoney was extremely responsive and helpful in answering my queries both pre and post survey. He phoned straight away to give me a quick summary and turned around the report in the same day. Overall great service.
Camille, London Posted on 15/06/2017 , work completed 15/06/2017
Very helpful report
Customer Service
We have damp in our flat. Jason did a survey for us which told us exactly what the problems were; their extent; what should be done; and gave us a shortlist of firms who could deal with it. His report was clear and arrived the next day. We would be glad to recommend him.
John, London Posted on 03/05/2017 , work completed 03/05/2017