JJ London was established in 2014. We are a private building contractor, focusing on the construction and renovations of residential property across London. 
We build projects for private clients, architects and interior designers. We are able to offer a full design & build service, through the engagement of our own architectural design team. 
To date, we have completed more than 40 projects. Each scheme has been unique, ranging from the renovation of single bedroom flats to the redevelopment of multi-unti sites. 
Our approach is highly management lead, meaning clients receive the best levels of care, whilst benefiting from an ultra high quality final product.

Trades offered

Handyman and maintenance
Builder general
Loft conversions
Garage conversions
General extension
Carpenter and Joiner
General carpentry
Roofing general
House Builder
New build
Custom/Self Build

Customer testimonials

04 Feb 2019

Johnson & Johnson are just completing our third project! We have found them to be efficient, helpful and very informative as to the progress being made on our works. Whilst we have been absent from our home we have also received photos from J&J on a regular basis, thus keeping us completely up to date at all times. We are looking forward to embarking on project number four with them! - HC & AC


04 Feb 2019

Working with Arthur and the J&J team was fantastic. Knowing we had guys on site who cared, got in touch if they had any issues and kept on time and to budget made the whole experience incredibly enjoyable. The detail and quality of finish that we managed to maintain on a relatively tight budget was excellent and I would definitely use them again, that’s if they aren’t too busy! - AP

Earls Court

04 Feb 2019

We used J&J to completely refurbish our London flat. Arthur’s easy yet confident personality and highly accomplished team of workmen made the whole experience very easy and quite honestly a pleasure. They gave us an honest time line and stuck to it. Nothing seemed too much trouble and we saved so much time using many of Arthurs contacts which included a brilliant cabinet and kitchen carpenter, bathroom tiles and wooden shutter suppliers (just to mention a few) all offering high quality and in-trend products, but not at top end prices. We have no reservations in highly recommending Johnson & Johnson - BG

Parsons Green

04 Feb 2019

I have had the opportunity to work with Arthur Johnson in the renovation of my flat. It was 14 weeks work, where I thought Arthur was very helpful and the result matched my wishes. I highly recommend his services and firm. - FF

Belsize Park

04 Feb 2019

Arthur and his team have completed a number of major development projects for me over the last 3 years and I have always been impressed with the quality of the work and the attention to detail. I have worked closely with Arthur on the design of many elements of the builds and as a result we have been able to maximise the use of space and create a very high-quality finish. He has a very good eye and goes above and beyond to help me as a client. I look forward to continuing to work together in the future and would gladly recommend Johnson & Johnson.” - SW


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