“GSW did a superb job . There time keeping was excellent , workmanship first class and all delivered in a pleasant and helpful manner . When minor unexpected problems occurred they always had good practical ideas. They protected the house from dust as best they could and cleaned up ery night before finishing .”
Public evidence profile
G.S.W Building Ltd
Trust Score
48out of 100
- Rated 5.0 from 46 reviews
- Reviewed 8 months ago
How this score is worked out
Rating5.0 / 5
Review volume46
Independent sources2 independent public sources
CredentialsNo credentials shown yet
How this score is made up
What customers say35.3 of 60
Independent checks8.1 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 details5.1 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.
From customer reviews
What customers consistently say
What this trader's customers report about their jobs, in their own words.
Respectful and tidy in your home: “cleaned up ery night before finishing .” · Checkatrade, 12 Dec 2025
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.
5.0out of 5
Where these reviews are published
- Checkatrade46 reviews · 5.0 avg
Highlights
“I couldn't be happier with the incredible work that Gavin did on my office space. From the very beginning, he was professional, communicative, and happy to help with advice to rennovate a non-functional space. The project was not without its challenges, but Gavin consistently went above and beyond to find solutions and ensure every detail was perfect. He was always on time, kept the worksite tidy, and completed the project to a high standard within the quoted timelines and budget. He's transformed the room, and I'm so grateful for his hard work and expertise.”
“From the first visits to quote to the final checks Gav was brilliant- extremely knowledgeable, hard working, reliable, tidy and friendly. As well as doing the bulk of the work himself (& team), Gav also managed all the extra trades needed to complete the job making the whole project as stress free as possible for us. Works have been finished to a high standard and we're really grateful for Gav's advice and hard work provided throughout to ensure this was the case. We would highly recommend GSW building ltd for any project and would seek to use Gav and team again for any future works.”
Detailed reviews
These are the individual reviews we hold for G.S.W Building Ltd, including the highlights above. The 46 headline total is the review volume reported across public review sources.
GSW did a superb job . There time keeping was excellent , workmanship first class and all delivered in a pleasant and helpful manner . When minor unexpected problems occurred they always had good practical ideas. They protected the house from dust as best they could and cleaned up ery night before finishing .
I couldn't be happier with the incredible work that Gavin did on my office space. From the very beginning, he was professional, communicative, and happy to help with advice to rennovate a non-functional space. The project was not without its challenges, but Gavin consistently went above and beyond to find solutions and ensure every detail was perfect. He was always on time, kept the worksite tidy, and completed the project to a high standard within the quoted timelines and budget. He's transformed the room, and I'm so grateful for his hard work and expertise.
From the first visits to quote to the final checks Gav was brilliant- extremely knowledgeable, hard working, reliable, tidy and friendly. As well as doing the bulk of the work himself (& team), Gav also managed all the extra trades needed to complete the job making the whole project as stress free as possible for us. Works have been finished to a high standard and we're really grateful for Gav's advice and hard work provided throughout to ensure this was the case. We would highly recommend GSW building ltd for any project and would seek to use Gav and team again for any future works.
Local context
Rated 5.0, above the local average for builders in Royston
Across 5 builders in Royston, the typical rating is 4.8 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
2 named public sourcesWhere 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
Business and public registers
Check dates vary by source. Where we hold a date, the check shows it.
About
Builder in Royston.
Services they list
Accessible KitchensBrick / Concrete Structural RepairsCar PortsCladdingConcrete GaragesConcretingDemolitionDiamond DrillingExtensions / ConversionsFire and Flood RenovationFoundationsGarage Conversions
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
Royston
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
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 G.S.W Building Ltd before you contact them.
Run Cowboy Checker →Good to know
Common questions about G.S.W Building Ltd
Is G.S.W Building Ltd a legitimate business?
G.S.W Building Ltd has 46 independent public reviews, rated 5 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 G.S.W Building Ltd?
G.S.W Building Ltd has 46 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 G.S.W Building Ltd's reviews are genuine?
G.S.W Building Ltd's 46 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 G.S.W Building Ltd specialise in?
G.S.W Building Ltd lists specialist services including Accessible Kitchens, Brick / Concrete Structural Repairs, Car Ports, Cladding, Concrete Garages, Concreting. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
