Damp proofing / waterproofing
Purpose Developments
Trust score
47out of 100
Rating5.0★
Review volumeLow · 3
Evidence breadth1 independent public source
Profile statusListed
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
Reviews · public evidence
What customers say
These reviews are published independently on the named public source below — not testimonials this trader chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
Highlights
"Demolition of old garage, build a new garage conversion with office, bathroom and kitchenette. All built to current building regulations. Clean tidy workers with great quality work and fantastic communication throughout the project. Will be using again in the future."
"I found Carl to be very tidy ,polite and efficient.Carried out all the work he quoted for and was on time. He knew exactly what was required for the job and was confident in his abilities to do the work.All in all I would recommend him to other people."
"I can’t fault Carl on this job: - He was quick to respond to the request for a quote; he came on Sat after I posted the request Fri eve - He was quick to provide a quote and when the job was agreed he started as promised - He always left the site immaculate - He called afterwards to make sure I was happy with the job and he left instructions of what to do to ensure the walls stayed dry - He was upfront that the walls would take a while to dry properly - He suggested ways of keeping the room dry even if he was not the one to install it & to finish he worked on Saturday 10 out of 10! Thank you!"
Detailed reviews
Demolition of old garage, build a new garage conversion with office, bathroom and kitchenette. All built to current building regulations. Clean tidy workers with great quality work and fantastic communication throughout the project. Will be using again in the future.
I found Carl to be very tidy ,polite and efficient.Carried out all the work he quoted for and was on time. He knew exactly what was required for the job and was confident in his abilities to do the work.All in all I would recommend him to other people.
I can’t fault Carl on this job: - He was quick to respond to the request for a quote; he came on Sat after I posted the request Fri eve - He was quick to provide a quote and when the job was agreed he started as promised - He always left the site immaculate - He called afterwards to make sure I was happy with the job and he left instructions of what to do to ensure the walls stayed dry - He was upfront that the walls would take a while to dry properly - He suggested ways of keeping the room dry even if he was not the one to install it & to finish he worked on Saturday 10 out of 10! Thank you!
Sources
1 named public sourceEvery signal, traced to its origin
Review sources
Public evidence last checked May 2026
About
Damp proofer in Portsmouth, Hampshire.
How long they've been online
From their own website
How long they've been online
Online since 2017. Their website domain was first registered in 2017, according to the public domain registry — an independent sign of how long they’ve been operating online (we checked this ourselves, it’s not a claim from their site).
Check them yourself
What to check before you hire
Worth checking yourself
Review volume: Low · 3
Evidence breadth: 1 independent public source
Profile status: Listed
Verify at the sourceCheck them yourself
Damp and timber work isn't licensed in the UK, and "rising damp" is often over-diagnosed - so a real qualification matters. Property Care Association members hold recognised damp-surveying qualifications (CSRT/CSSW), follow a code of ethics and must have traded at least three years. Check they're a PCA member before you accept a damp-treatment quote.
Check the PCA registerGet an INDEPENDENT damp survey — not a free one from the firm that wants to sell you the treatment. A free survey has every incentive to diagnose expensive 'rising damp', when the problem is often condensation, a leak, or high ground level that needs no chemical injection.
Insist they identify and fix the underlying CAUSE — a leak, blocked airbricks, poor ventilation, failed pointing — before agreeing to an injected damp-proof course, and ask them to explain why simpler fixes won't work.
Get the diagnosis and an itemised quote in writing, and be wary of pressure to sign on the spot for a long 'guarantee' that is only worth anything while that firm is still trading.
Want an extra legitimacy check? Run the Cowboy Checker on Purpose Developments before you contact them.
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Common questions about Purpose Developments
What do customers say about Purpose Developments?
Purpose Developments has 3 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know Purpose Developments's reviews are genuine?
Purpose Developments's 3 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published — so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
How long has Purpose Developments been trading?
Purpose Developments's website has been online since 2017, according to the public domain registry — an independent marker of how long they have been established.