We are leading experts in the project management of loft conversions, extensions and refurbishments, committed to providing our customers with the highest level of service and construction possible.  Our extensive portfolio of satisfied loft conversions and house extension clients reflects our dedication in providing a first class service. We cover the home counties, London and surrounding areas.


With high quality loft conversions or house extensions, you can increase the value of your home as well as increase your living space. As one of the UK’s most popular forms of home improvement, loft conversions and house extensions can make wasted space practical and reduce your bills through insulation. With house prices on the rise and the extensive cost of moving, a loft conversion or house extension could also have a number of financial benefits, including providing a space for rental income.

Why A1?

  • Over 2,500 completed projects
  • In our 17th consecutive year of operations
  • 98% of our clients recommend us to family and friends
  • The majority of our work comes through customer referrals
  • Over 250 client show homes to visit, unescorted
  • Your money is safe with the A1 secure payment process
  • Customer Service is our number 1 priority – we take the customer step by step through their project giving them complete transparency of operations and ultimate control throughout, managing each project from start to finish
  • Choice – From a variety of services to the whole package – it’s your choice. We interpret your ideas, advise on the best solution and create your dream loft
  • Superior Design – our experienced designers will work with you to provide innovative solutions for your space and design
  • We provide comprehensive 10 year company backed guarantees as standard to all our clients at the time of contract, for complete peace of mind.
  • Velux VIP Installer 2013, Best of Houzz 2015 Design, Certified Installer Velux & ISO 9001 Accreditation