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KM Builders

9.6/10

Greenford, Greater London

Checkatrade member since October 2025

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Public liability insurance is unverified

Services

Agricultural Building
Basement / Cellar Conversions
Brick / Concrete Structural Repairs
Car Ports
Cladding
Concrete Garages
Concreting
Core Drilling
Demolition
Emergency Builder Service
Equestrian Stable
Extensions / Conversions
Fire and Flood Renovation
Foundations
Garage Conversions
Garden Studios
General Building
Loft Conversions
Mastic Sealant
Partition Walls
Refurbishments
Suspended Ceilings
Sustainable Construction
Wall Tie Replacements
Warehouse Racking
Workshop Design / Construction

Customer Reviews

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9.6 /10

Based on 10 reviews over the past 12 months

Quality of work

9.5

Reliability

9.6

Communication

9.7

Reviews (10)

10
Five‑Star Loft Conversion/Building Team - highly recommend
Posted 05 March
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.
Verified reviewer
Job location: HA4
10
Excellent builder in Harrow
Posted 24 February
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
Verified reviewer
Job location: HA3
A
Andy B
10
Rear Porch Window Installation
Posted 16 February
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.
Verified reviewer
Job location: UB10
10
Plastering of multiple rooms
Posted 11 February
Had multiple rooms plastered with lots of prep to do alap including plasterboarding and bonding walls. The guys did a great job very happy with the quality of work. Always turned up on time and left house very clean afterwards and very friendly and professional. I would not hesitate to recommend them to anyone wanting work and will use again for any future jobs.
Verified reviewer
Job location: HP13
K
Kostas M
7.67
Rebuilding of balustrade wall and repainting
Posted 02 February
Kieran is very approachable and skilled for the job. There were some details that needed to be more attention, but overall I’m happy the outcome
Job location: HA5
10
New Kitchen
Posted 13 January
New kitchen, units, tiling and decorating
Job location: HA2