Endorsed by Which?

JNJ Building Services Ltd

5.0

29 Reviews

Opening Hours
Today - 24 hours
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  • Sunday - 24 hours

Organisations and Awards

JANUARY 2021

About

JNJ Building Services Ltd is a family-run, multi-award-winning residential construction company based in West London.

Established in 2014, we have over 11 years of experience transforming family homes. We specialise in home extensions, loft conversions, internal refurbishments, and structural works.

Our team only uses City & Guilds qualified tradesmen, in-house architects, engineers, party wall surveyors, and a trusted private building control officer.

We follow all construction H&S laws to protect our team and help clients understand their responsibilities.

Using accurate costing and accounting software, we ensure transparency and efficiency on every project. We’re fully insured with public liability, employee, and all-risks cover.

For the past 5 years, we’ve supported the food bank charity Surplus to Supper, volunteering weekly and donating annually.

Working with Which? Trusted Traders has been a great experience—they truly put the consumer first.

What we do

  • Builders

  • More Services

    • property refurbishment
    • basement developments

Customer reviews

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5.0
29 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
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Specialist brickwork and bay window repair
Customer Service
Quality
Value
We chose JNJ Building Services Ltd in a competitive tender to repair damage done to our bay windows. The work required the erection of new brick piers and the replacement of broken wooden shutters & windows which were operated by sash cords and weights. JNJ prepared a clear description, budget, and time plan for the work which they kept to. The quality of the brick work was excellent, and they took care to use the existing bricks where possible. The shutters were successfully replaced with new cords and weights. Overall, JNJ did a first-class job and were friendly and reliable throughout the work. They had a professional approach and worked well with the separate firm who replaced the windows and who had been recommended through JNJ.
Customer in Greater London Posted on 04/05/2020 , work completed 23/07/2018
The trader replied (on 17/11/2020)
Lovely review, This was a specialist and detailed job that came out perfect. Really happy to bring back the character of your property. Director Jamie Jenkins
Friendly & competent building contractors
Customer Service
Quality
Value
Jamie & his teams completed a porch extension for my mother-in-law last year, to include a new downstairs toilet that she needed. They provided a comprehensive quote, committed to a convenient start date and agreed a sensible payment programme to protect both parties. There were a number of challenges on the job that they successsfully overcame, but meant that it did over run slightly. However, they did undertake additional works that my mother-in-law requested, at a cost that reflected that they were already on site. The standard of work was high and team members friendly, with my mother-in-law comfortable to have them in her home. Finishing some minor snagging at the end took a little time, but understandable as they had moved on to another job. All completed successfully on budget & a good job done.
Customer in Greater London Posted on 06/01/2019 , work completed 30/01/2018
The trader replied (on 17/11/2020)
Thanks for a wonderful review. It was a great project working on your porch. Your mother-in-law is real joy. Director Jamie Jenkins
Great work at reasonable prices
Customer Service
Quality
Value
I have had 3 different jobs done. My complete refit of my bathroom. Partial refit of my kitchen. Also patio done in garden. Jamie was very friendly and helpful. He gave a proper quote and stuck to it. He was never phased by any issues and did a very good job on all 3 jobs. He was very tidy and always came back if any issues after job completion. When the decorator he got to finish the painting let me down, he immediately got someone else at no extra cost to fix the issues. I would highly recommend this company.
Which? Trusted Traders Consumer Posted on 19/05/2017 , work completed 19/05/2017
The trader replied (on 17/11/2020)
Thanks for an incredible review. It was great working with you. We are glad you're happy Ever need anything else please call anytime. Director Jamie Jenkins
Personal, reliable, quality and value
Customer Service
Quality
Value
We have had several jobs over a couple of years. Fitting internal doors, fitting a kitchen, plumbing external plumbing and converting an outside toilet into a utility room.
Which? Trusted Traders Consumer Posted on 15/04/2017 , work completed 15/04/2017
The trader replied (on 17/11/2020)
Thanks for the review and continued works. Really happy to be working with you. Jamie
Quality roofing work
Customer Service
Quality
Value
JNJ Building fixed an issue with the guttering and our roof, which was causing water to seep down an exterior wall resulting in damp forming in the wall. They did an excellent job, taking care not to damage the lawn and left the work area clean and tidy.
Which? Trusted Traders Consumer Posted on 09/04/2017 , work completed 09/04/2017
Wonderful service and fantastic work.
Customer Service
Quality
Value
Jamie and his team re-did our garden to an extremely high standard. Removed decking and laid a patio. Built a beautiful flower bed which runs around the edge of the garden. Installed lights as well. The team also built a bespoke walk-in wardrobe which is gorgeous. The carpentry was to an exceptional standard. They also removed existing shelves and build bespoke shelving.
Which? Trusted Traders Consumer Posted on 01/03/2017 , work completed 01/03/2017
The trader replied (on 17/11/2020)
Thanks for the wonderful review. It was great working with you and transforming your garden. We are glad you like it. Anything else you require please call us Director Jamie Jenkins
Great quality of work from JNJ builders.
Customer Service
Quality
Value
We had a loft conversion, side unfil (side return) & a 3 meter extension out of the back of our house. We have used JNJ builders once before and had a very positive experience with them, so didn't hesitate to use them again on our building work. Once again we had a very good overall experience with them. The quality of work and finish was very good & they came in on budget. I am always able to call on them if there are any teething problems and they do their best to come straight away to fix any problems, that are inevitable in all building projects. We would definitely use them again in the future.
Which? Trusted Traders Consumer Posted on 20/02/2017 , work completed 20/02/2017
The trader replied (on 17/11/2020)
Thanks for the great review! Much appreciated. Anything else you require please let us know
Highly recommend
Customer Service
Quality
Value
Jamie and his team built and landscaped my patio garden including raised brick flowerbeds, new paving, fencing and drainage. The work was completed to a very high standard in time and within budget.
Which? Trusted Traders Consumer Posted on 15/11/2016 , work completed 15/11/2016
Great Builders!
Customer Service
Quality
Value
Loft conversion Jamie together with his team of workers are a pleasure to have working in your home. I found all of them courteous and willing to do a good job. He created a good working atmosphere and worked alongside them as well as directing the work. They care about providing high quality standards and finish and I felt confident that the work at all stages would be done as required. We had regular meetings to update on progress and he was willing to change my ideas on the internal plans (such as fittings and fixtures). They would clean up before leaving and he ensured they protected the house by closing off areas that would prevent debris and dust falling in as far as is possible with this type of work. My neighbour's frequently commented on their excellent way of working as well as keeping the street and area clean around and in front of the properties, I did not receive any complaint! I am absolutely delighted by the finish of the loft. If you are looking for an enthusiastic, trustworthy and committed builder then I can recommend JNJ Building Company without hesitation.
Which? Trusted Traders Consumer Posted on 05/06/2016 , work completed 05/06/2016