Endorsed by Which?

JNJ Building Services Ltd

5.0

23 Reviews

Opening Hours
Today - 24 hours
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  • Saturday - 24 hours
  • 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
23 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
Sort by
Luxury Extension
Customer Service
Quality
Value
We chose JNJ to build our luxury kitchen extension and provide us with a new drive because they are a Which Trusted Trader with excellent reviews. I can now see why. From the outset Jamie and his team were professional, courteous, and helpful. The neighbours were all impressed with their communication and consideration, as were we. Messages and phone calls were answered swiftly, and the project was well organised with a comprehensive breakdown of costs at every stage. The only reason we went over budget was because I added more jobs! JNJ’s corporate identity is evident through their distinctive logo on their vehicles and on their shirts. All sub-contractors were introduced to us by Jamie before they started work. The health and safety of workers and residents was paramount as we lived in the house for over half of the time the work was being carried out. We were delighted with our new extension and so grateful to Jamie and his team. His after care has been fantastic – he even came out to install a new washing machine for us several months after the work had finished. We would have no hesitation in recommending JNJ to anyone looking for a great company and indeed we have already suggested to several people that they should call Jamie. Thank you, Jamie, and team!
Customer in Buckinghamshire Posted on 04/05/2020 , work completed 23/08/2019
The trader replied (on 17/11/2020)
Thanks for a lovely review. We know you were really happy with the outcome. The kitchen looks stunning. It was great working with you and the family. Please call me anytime Director Jamie Jenkins
Designer Home
Customer Service
Quality
Value
JNJ Building services have restored my faith in building firms. We got exactly what we paid for with a high degree of commitment and professionalism. Jamie is 100% committed to meeting client expectations and has a degree of pride in the finish that is rarely seen. Thanks, so much Jamie and team!
Customer in Greater London Posted on 04/05/2020 , work completed 20/06/2019
High-end Renovation
Customer Service
Quality
Value
Jamie and his team are very professional and considerate and produce good quality work in good time. The estimates given are always detailed and fairly accurate so there are very rarely any extra hidden charges suddenly appearing. Jamie always keeps you informed and always makes himself available for any questions. The work is always completed on time and the place is always left clean and tidy. The after care is also available and much appreciated! I would recommend JNJ Building for any work required.
Customer in Greater London Posted on 04/05/2020 , work completed 04/01/2019
The trader replied (on 17/11/2020)
Thankyou for the review it's much appreciated. It was great working with you. Being clean is our number 1 priority. Call me anytime Director Jamie Jenkins
Luxury Mansion
Customer Service
Quality
Value
We were recommended JNJ Building Service Ltd from a close friend who was a previous client of JNJ. From the outset of the interaction we were impressed and thus chose JNJ from a tender list of 6. Jamie took considerable time walking us through all the documents of JNJ including their code of conduct, complaints procedures, quality assurance processes, communications procedures, and the contracts which they intended to use with us. As with the entire engagement, we were extremely comfortable and happy with JNJ, mostly due to the customer service and attention we were paid by the site manager and Jamie. This type of professionalism was unexpected, especially due to the stereotypes which the building professionals have. Jamie and the JNJ team are truly correcting that stereotype. The quality of the work is fantastic, and we were delighted with the result, well above what we envisaged. JNJ has truly helped create our luxury dream home and place of relaxation. We constantly recommend him everyone who comments on how beautiful our home is.
Customer in Greater London Posted on 04/05/2020 , work completed 03/09/2018
The trader replied (on 17/11/2020)
Thanks for a great review. This was an incredible project to be a part of. Really happy with the high end finish. Call me for the next big project. Director Jamie Jenkins
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