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Trusted Traders

JPM Independent Surveyors

Profile thumb jpm


38 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)
: Institute Of Specialist Surveyors and Engineers.
: 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 London; North, West, East, North West, North East and Central London.

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.

38 reviews
Customer Service
Sort by
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
Good & reliable service
Customer Service
JPM Independent surveyors provided us with a very thorough & detailed report and delivered the report promptly. He was also happy to answer any queries we had after he had carried out the survey, which was very helpful & particular appreciated as first time buyers of a property.
Tessa, London Posted on 02/05/2017 , work completed 02/05/2017
Very pleased
Customer Service
He provided a damp proofing survey - first time we had used him and definitely willing again as he did everything right. He turned up on time and produced an excellent support and provided great follow up advice
Roots, London Posted on 01/05/2017 , work completed 01/05/2017
Professional & approachable
Customer Service
Jason was prompt and efficient. He was professional and informative and was tolerant of my many questions. His comprehensive report was with me in a matter of days.
Maggie, London Posted on 10/04/2017 , work completed 10/04/2017
Efficient and helpful
Customer Service
Jason undertook timber and damp survey. He provided the report promptly with clear pictures, descriptions, instructions and estimated costs. Very helpful.
Solomon, London Posted on 23/03/2017 , work completed 23/03/2017
Clear, reliable & prompt.
Customer Service
Easy to contact & set up appointment. All advice explained clearly & written report, with pictures returned promptly.
Sheila, London Posted on 18/11/2016 , work completed 18/11/2016
Surveyor of property for damp
Customer Service
I used JPM for a survey and found them to be polite, prompt and thorough. From the initial callout in late Oct 2016 to the report being emailed to me, it has been a very easy process. (I phoned quite a few companies initially and not all are so easy to deal with). All individuals concerned were polite and great to work with. I would definitely recommend without hesitation.
1255647 Posted on 11/11/2016 , work completed 11/11/2016
Very quick and understandable
Customer Service
Jason managed to turn around the detailed report within a couple of days of the survey, and the report itself was very easy to understand – not full of jargon, and the bits which are more technical are explained thoroughly. Even after the report was given, Jason made himself available to answer any questions, which he did so very quickly.
whyceecee Posted on 30/09/2016 , work completed 30/09/2016