Extensions and conversions in Dartford

Use our Find a builder search to find good local builders. FMB members are checked and inspected at the point of joining, and can offer you a contract on your work assuring you of a better building experience.
  • Independently vetted
  • Customer reviews
  • Case studies
  • Insurance

Or search for a member by name

  1. You're here:
  2. Homepage
  3. Find a Builder
  4. Extensions and conversions
Share this page
iStock loft conversion builder windows.jpg

Trusted builders

Here is a selection of reliable builders experienced in converting properties and building extensions located across the United Kingdom. If you're looking for local builders near to you, please enter your location into the form field above to refine your search. Find out what to look for when choosing a builder and how to ensure your building project is a success in our Ultimate guides. 

Load more builders

Get inspired

House extensions_kitchen plans_Cropped image.png
28 June 2022

6 common mistakes to avoid when planning an extension

Planning an extension is probably one of the most expensive things you’ll ever do. So it pays to get it right first time. We called in extension expert and FMB member Deepak Singh Udassi to walk us through how to avoid mistakes when planning an extension.

Harrington-Builders-Kenley-Ltd,-London,-kitchen-project-2000W.jpg
31 May 2022

6 home extension ideas you won’t want to overlook

If you’re in need of some extension inspiration, you’ll need to think about the details - in this article we’ll cover a few extension ideas you’ll want to give your builder a heads-up about before works begin.

Subscribe to The Home Edition

Looking for advice and inspiration for your next building project? Get tips on how to live well and build better, including free tickets to some of the UK's biggest home improvement shows. Find out how we handle your data in our privacy policy. 

Why use a Master Builder?

At the FMB, we connect clients with quality, local builders they can trust.

Master Builders are committed to high standards and their membership of the FMB must be earned. Members have to pass a professional vetting and independent inspection process before joining to ensure they meet the high standards expected of a Master Builder company. 

Why choose a Master Builder?
FMB_Master Builder_Amic Ltd_Surrey Apr2016.jpg