Why choose Cox Format?

  • A local family firm operating in Barnet for 40 years under the same name.
  • One stop shop for design, build and home finishings.
  • All of our trades are employed by us, many having started as apprentices.
  • Free kitchen design service when we build your kitchen extensions.
  • Barnet High Street office, open to the public. Come and visit us.
  • Free, no obligation quotes are usually issued within 7 days.
  • Customer feedback says we are reliable, trustworthy and affordable.
  • Trade discount on kitchens when we build your kitchen extension.


February 2020

Amazing piece of work

Double Commas The job was to build an extension at the rear of the house for a wet room next to the small kitchen involving removal of an old toilet block which in turn would give further space to the kitchen. Plans and any queries were thoroughly talked through by the team with ourselves beforehand and throughout the job. Important to us. Payment was done as each stage of the job was completed and our satisfaction assured. The builder – professional – and crew were very hardworking, thoughtful, polite and tidied at the end if each day. The end result was a piece of craftsmanship – a creation of space one could not have imagined. We would recommend Cox for your building needs.Double Commas

Customer in Greater London

December 2019

Loft Conversion to en suite bedroom in Barnet

Double Commas Well organised and good communication ensured a good job with minor issues promptly resolved. We are very pleased with the outcome and would recommend Cox Format to others.Double Commas

Customer in Greater London

November 2019

Throrough and pleasant

Double Commas We have had two lots of fairly minor repairs carried out by Cox Format, both were done very well by very pleasant workers – recommended.Double Commas

Customer in Greater London

July 2019

Loft conversion and first floor bathroom remodel

Double Commas We took our time to make a decision regarding building companies. With such a big project, we wanted to make sure we got it right. We could not be happier that we decided to go with Cox Format. The builders were all professional, courteous and respectful of ours and our neighbours’ properties. They were always on time and tidied up at the end of every day. The foreman was clear in his communication and open to questions and concerns throughout the build. The project was completed on time, as projected, and we are beyond pleased with the quality of the work. No cutting corners, no “patch jobs”; they ensured that things were done right. Some companies may cost less, but you get what you pay for. I wouldn’t hesitate to recommend Cox Format.Double Commas

Angela, Greater London