“John was very helpful when quoting for the job, advising what would be best to complete the project. They did a great job and I am very happy with the quality of work. They were always on time, very friendly and professional, keeping me informed of progress and timescales throughout the job. I would not hesitate in recommending them to anyone wanting work.”
Public evidence profile · Checked March 2026
KM Builders
Based on rating, review volume, independent sources and credential evidence. 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.
5.0out of 5
How Checkatrade customers rate them (out of 5)
Reliability4.8
Communication4.8
Quality of work4.8
Based on the 3 reviews with a star rating
5 stars3
4 stars0
3 stars0
2 stars0
1 star0
Where these reviews are published
- Checkatrade10 reviews · 5.0 avg
Highlights
“Our previous builder left unfinished work. I contacted Kieran who came and met with us. He have us an honest assessment of what needed to be done, and an excellent quote. He carried out everything he said he would. He was always on time, communicated very well and used his colleagues for other jobs as we needed The quality of his work was outstanding. He is professional, and polite. Highly recommended”
“John and the boys did a fantastic job on my loft conversion. They talked me through the plan each week, shared great ideas from their experience, and nothing was ever too much trouble. John even showed me different lofts to help me choose the right route. I’m more than happy with the result and the whole process was completely stress free. Very fortunate they were highly recommended. Thank you John, Sean and all the guys — a truly trustworthy, experienced & very down to earth team. Highly recommend and would definitely use them again.”
Detailed reviews
John was very helpful when quoting for the job, advising what would be best to complete the project. They did a great job and I am very happy with the quality of work. They were always on time, very friendly and professional, keeping me informed of progress and timescales throughout the job. I would not hesitate in recommending them to anyone wanting work.
Our previous builder left unfinished work. I contacted Kieran who came and met with us. He have us an honest assessment of what needed to be done, and an excellent quote. He carried out everything he said he would. He was always on time, communicated very well and used his colleagues for other jobs as we needed The quality of his work was outstanding. He is professional, and polite. Highly recommended
John and the boys did a fantastic job on my loft conversion. They talked me through the plan each week, shared great ideas from their experience, and nothing was ever too much trouble. John even showed me different lofts to help me choose the right route. I’m more than happy with the result and the whole process was completely stress free. Very fortunate they were highly recommended. Thank you John, Sean and all the guys — a truly trustworthy, experienced & very down to earth team. Highly recommend and would definitely use them again.
Local context
Rated 5.0, above the local average for builders in Greenford
Across 31 builders in Greenford, 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
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
Public evidence last checked March 2026
About
Builder in Greenford, Greater London.
Services they list
Agricultural BuildingBasement / Cellar ConversionsBrick / Concrete Structural RepairsCar PortsCladdingConcrete GaragesConcretingCore DrillingDemolitionEquestrian StableExtensions / ConversionsFire and Flood Renovation
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
Greater LondonGreenford
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
Always confirm credentials and quotes with the business directly before hiring.
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 KM Builders before you contact them.
Run Cowboy Checker →Good to know
Common questions about KM Builders
Is KM Builders a legitimate business?
KM Builders has 10 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 KM Builders?
KM Builders has 10 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How is KM Builders rated on reliability and quality?
On Checkatrade, customers rate KM Builders by category: Reliability 4.8 out of 5, Communication 4.8 out of 5, Quality of work 4.8 out of 5. These are per-category scores from real published reviews. They show where KM Builders is strongest, not just the overall average.
How do I know KM Builders' reviews are genuine?
KM Builders' 10 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 KM Builders specialise in?
KM Builders lists specialist services including Agricultural Building, Basement / Cellar Conversions, Brick / Concrete Structural Repairs, Car Ports, Cladding, Concrete Garages. If your job is one of these, look for it in their listed services or ask them to confirm for your project.