0203 432 5269
0203 715 5892
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London's Leading Extension Company
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About Company

The Market Design & Build is London’s leading home extension specialist, we refurbish and build high quality properties in London and beyond. Having undertaken 100's projects from roofing and loft conversions to Home extensions and new builds. We are trusted by our many hundreds of clients as shown by our 500+ positive reviews on Checkatrade.

We specialize in bespoke London home extensions, loft conversions, roof repair and replacement, house refurbishments and new builds, all carried out by our Design Team and our qualified team of builders. What makes us so special is our excellent communication, fantastic customer service and superior workmanship, which is why we have built a loyal client base over the years.

We offer:

  • 10 years Guarantee of our work.
  • Help with planning permissions.
  • Bespoke Architectural service.
  • Free quotations.
  • Full project management.
  • All aspects of Construction work covered.

Whether you are looking for a brand new kitchen or dining room, a loft conversion or even a complete house refurbishment, The Market Design & Build are here to assist you from the very outset. We are experts in our field and have a wealth of knowledge and experience to help you in attaining the property of your dreams.


Completed Projects

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The Market Design & Build Magazine

Design & Build

As an industry leading company we have developed our own FREE magazine that will introduce you to us, our products, our services and give you new design ideas and inspiration for your next project.


Read our blog


Read the latest news from our own London home improvement blog! You can also see some of our stunning renovation projects featured on the popular property ideas website Homify.


Who we are

The Market Design & Build is a leading London based loft conversion and home extension company, established to meet the demand in the market for honest, open and hard working building management.


What we do

We work closely with the design team and the client to provide a dynamic strategy to push forward any development plans. The Market Design & Build are proud to operate to the highest standards.

The Market Design And Build - Checkatrade

Our accreditations

  • London loft conversions and extensions
  • London loft conversions and extensions
  • London loft conversions and extensions
  • London loft conversions and extensions
  • London loft conversions and extensions
  • London loft conversions and extensions
  • LABC
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