EXTENSA DESIGN AND BUILD LTD

Reviews (37)

• 9

  Transparent and Friendly Contractors

  Posted 28 December 2025

  Extensa undertook a single storey house extension for us. The communication was excellent and the work generally smooth. When issues arose such as surprises in the ground, they were clear, transparent and available which really helped put us at ease. I have no complaints about Extensa and would happily recommend them. The lessons learned which are largely unrelated to Extensa would be to properly understand the planning system and order sliding doors early in construction to avoid delays
  Verified reviewer
  Job location: TW9
• 10

  Garage refurbishment

  Posted 10 March 2025

  We had our garage done by Joe and the team with insulation and under roof storage. We were very happy with the results. Their communication was excellent in terms of responsiveness and clarity, they were very flexible and adapted to our requirements really well but also made great suggestions to address our needs which improved the final result. I would strongly recommend and will definitely work with them again for future projects.
  Verified reviewer
  Job location: W3
• 10

  Garage Conversion

  Posted 22 December 2024

  We found Extensa through Checkatrade. We had 6 quotes, but chose them based on an expert's review of their quote. Friends said double the timeframe/budget/stress. We didn’t need to. This team have been AMAZING. Not only did they deliver on time and on budget – they have created a home that we love so much that I literally get up in the middle of the night to have a look in disbelief. They fulfilled the impossible task of getting us in for Christmas, to the highest of standards. We love every person on the team. Even my son asked Santa for a toolbox as inspo from Extensa. Thank you so much.
  Verified reviewer
  Job location: SW15
• 10

  Complete renovation

  Posted 19 November 2024

  We have been working with Extensa for the last 9 months on a substantial project in SW13. The quality of work has been second to none. What has been impressive thus far is their collaborative attitude, attention to detail and their proactive approach to providing cost saving solutions in order to help maintain budget. I highly recommend using them.
  Verified reviewer
  Job location: KT11
• 10

  Structural wall removal, complete rewire, stair replacement, chimney removal

  Posted 08 October 2024

  We hired Extensa for a large project that included removing a structural wall and installing beams, rewiring, removal of chimneys, stair prep for replacement, and the associated complete painting and redecorating (and other miscellaneous bits) Joe and the team were very knowledgeable, especially given their previous experience in building control. They explained timelines and the work that needs to be done, were courteous to us and the neighbours and best of all completed the job within the timeline. The job was finished to a high spec. We can't recommend them enough.
  Verified reviewer
  Job location: W3
• 9.75

  Full back to brick renovation, side extension, loft extension

  Posted 28 June 2024

  Jordan, Joe and the team were amazing throughout the whole renovation process. It was a huge and complex project with extensions, underfloor heating, mist fire system and ventilation fitted throughout the house. And the team did a brilliant job with attention to our needs and requests and great quality of finish. They are extremely reliable, patient, caring about clients' costs (which is very rare in this industry) and simply nice people. Would highly recommend!
  Verified reviewer
  Job location: SW2