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Endorsed by Which? Trusted Traders

Cox Format Developments Limited

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35 Reviews

Opening Hours
Today -
  • Monday 07:30–16:30
  • Tuesday 07:30–16:30
  • Wednesday 07:30–16:30
  • Thursday 07:30–16:30
  • Friday 07:30–16:30
  • Saturday - Closed
  • Sunday - Closed


Cox Format Developments Limited is a professional building company. The majority of our work is through personal recommendations. We are always happy to show previous work and our customers are happy to let you look! We pride ourselves on quoting a good price and sticking to it. Unless you instruct us to, we never add on "extras" as some less reputable builders do as their standard practice.

Because we are professionals, we can see what work is necessary to achieve your objectives, and we price accordingly. Others may quote cheaper initially, then add on what they see as "unforeseen extras". We believe our work is cheaper for the client in the long run.

On Budget... On Time... Everytime.

More information can be found on our web site www.coxformat.co.uk or at www.facebook.com/cox.format
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What we do

  • Builders

    • Loft conversions
    • Extensions
    • Building services
    • Garage conversions
    • Log cabins and homes
  • Roofers

    • Chimneys
    • Flat roofing
    • Guttering, fascias and soffits
    • Lead work
    • Roof and skylights
    • Rubber roofing (EPDM)
  • Loft and property converters

  • Bathroom fitters

    • Bathroom design services
    • Bathroom refurbishment
    • Wet rooms
    • Bathroom Installation
    • Accessible bathrooms and showers
  • More Services

    • new build houses
    • velux windows

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

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35 reviews
Customer Service
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Builders who care
Customer Service
We used Cox Format for our house refurbishment and the external electrics and lighting for our garden . They had been highly recommended by several neighbours and did not disappoint. All their tradesmen were excellent, fully engaged, and reliable. Their electrician is I believe the best in the business. The few issues that appeared along the way were dealt with swiftly. They are an extremely pleasant company to deal with, and are unlike any other building firm we had come across. True professionals who really care! Peter runs a very tight ship and fully participated in the project and was on site on a very regular basis directing traffic. Mark was in charge of project management and ensured everything ran to plan with no downtime. Drew Newman High Barnet
rossim Posted on 20/05/2017 , work completed 20/05/2017
Loft conversion.
Customer Service
I have had a loft conversion carried out recently by Cox Format ltd. Even though I had three additional quotes from other companies which were also competitive I eventually settled on Cox Format. I did this for several reasons. 1.They are an established company with a directly employed labour force. 2.The standard of their work is of the highest quality. 3.Their planning and co-ordination of material deliveries and different trades is first class. 4.They have excellent site supervision on the project from start to finish. 5.Any additional works outside the scope is clearly priced so there are no late surprises on budgets. 6.Perhaps and this is very rare despite promises they stick to their agreed programmes without comprising safety or quality. In conclusion they are a first class company who do exactly what they say and to programme.
patrick Posted on 27/04/2017 , work completed 27/04/2017
Very high standard of work
Customer Service
We have now used Cox Format on 3 separate occasions over many years to carry out loft conversions and kitchen extension. They have consistently worked to a very high standard. In addition to great workmanship (with zero snagging / problems) they are timely, polite and courteous, and they respond to any queries / issues very promptly. Highly recommend.
Kate Posted on 22/02/2017 , work completed 22/02/2017
Loft Conversion in Barnet
Customer Service
The team were well organised and arrived on time every day. All trades were of very good standard and the finish to the build is excellent. Any small issues that we had were sorted out and the foreman was polite and made sure everything happened when it was supposed to. The job was completed on time and to a very high standard. I would recommend Cox Format.
jonesij Posted on 09/10/2015 , work completed 09/10/2015
Which? Local Review
Customer Service
Cox Format did a hip to gable loft conversion on our semi-detached house. The build was on time and on budget. The guys worked quickly and efficiently. Small issues that arose during the process were dealt with efficiently and without trouble. Highly recommended.
Preyesh Posted on 22/04/2010 , work completed 22/04/2010