“We had a few quotes from different companies before we chose JNA Developments to carry out our loft conversion. From our initial meeting with Justin we instantly felt at ease. Justin is very knowledgable & came up with some great ideas for the best way to use the space. Justin’s team were very polite & conscious that we were still living in the house while the work was being done. All the work was completed to a very high standard & we would highly recommend them. We’re doing an extension next, which JNA will be carrying out.”
Public evidence profile
JNA Developments (London) Limited
Trust Score
46out of 100
- Rated 4.9 from 87 reviews
- Reviewed 9 months ago
How this score is worked out
Rating4.9 / 5
Review volume87
Independent sources1 independent public source
CredentialsNo credentials shown yet
How this score is made up
What customers say38.3 of 60
Independent checks2.9 of 30
Track record5 of 10
See the independent checks
- Licences and credentials0 of 10.3
- Ways to reach them2.9 of 3.4
- Reviewed on more than one site0 of 5.1
- Registered company details0 of 5.1
- Photos of their work0 of 4.3
- Industry recognition0 of 1.7
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. 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 business 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.
4.9out of 5
Where these reviews are published
- Checkatrade87 reviews · 4.9 avg
Highlights
“Quick and coutreous. Will use again for more work.”
Detailed reviews
These are the individual reviews we hold for JNA Developments (London) Limited, including the highlights above. The 87 headline total is the review volume reported across public review sources.
Local context
Rated 4.9, in line with the local average for builders in Tadworth
Across 20 builders in Tadworth, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
1 named public sourceWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Check dates vary by source. Where we hold a date, the check shows it.
About
Builder in Tadworth, Surrey.
Services they list
Extensions / ConversionsLoft Conversions
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
SurreyTadworth
The areas they list covering on a public directory; confirm they cover your address before you book.
Your own checks
What to check before you hire
Worth checking yourself
Their public evidence comes from a single source. Look them up on another site before deciding.
No credentials are shown here and the business has not claimed this profile. Ask to see certificates and insurance directly.
Verify at the sourceCheck them yourself
This trade isn't licensed in the UK, so anyone can set up. TrustMark is the only Government-endorsed quality scheme for work in and around the home - check whether they're registered, or find a TrustMark-registered business.
Check the TrustMark registerNever pay a large deposit up front. Agree a staged payment schedule tied to completed milestones, and hold a small retention until snagging is done.
Get it in writing: an itemised quote with scope, materials, start and finish dates, and how any changes (variations) will be priced.
Be wary of a cash-only price or pressure to start tomorrow. Both are red flags for an unaccountable job.
Want an extra legitimacy check? Run the Cowboy Checker on JNA Developments (London) Limited before you contact them.
Run Cowboy Checker →Good to know
Common questions about JNA Developments (London) Limited
Is JNA Developments (London) Limited a legitimate business?
JNA Developments (London) Limited has 87 independent public reviews, rated 4.9 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about JNA Developments (London) Limited?
JNA Developments (London) Limited has 87 public reviews, averaging 4.9 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know JNA Developments (London) Limited's reviews are genuine?
JNA Developments (London) Limited's 87 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.
What does JNA Developments (London) Limited specialise in?
JNA Developments (London) Limited lists specialist services including Extensions / Conversions, Loft Conversions. If your job is one of these, look for it in their listed services or ask them to confirm for your project.