Alfa home extensions limited is a registered home improvement company offering huge range of services from extension to loft conversion, and all type of renovations with highest standards. We take great pride in our reputation for superior client satisfaction. We strive to satisfy owners and consistently deliver projects on time, within budget and to a high standard of quality. Our business has always been renowned for excellence in craftsmanship and we continue that focus today. Our services include design and build extensions, loft conversions, kitchens and bathrooms, and all aspects of building work. All our work is insured and Guaranteed. We provide one year maintenance and 5 YEARS structure Guarantee to all our clients.


Why choose us?

.        We provide architecture drawings, plannings and  structure calculation services

·        Free Quotation

·        Local reference available

·        Fixed price, No Hidden Charges

·        Professional Service, Speedy Build, Highest Standards

·        Single Point Contact from start to finish

·        Full Building Control Approval guaranteed

.        Liability insurance for public , employees, and clients safety 

Contact us for a free, no obligation quote.

Trades offered

Builder general
Structural steelwork
Partition walls
General extension
Garage conversions
Wet rooms
Bathroom tiling
Bathroom fitter
Fibreglass/resin roofing
Conservatory roof
Dormer / Roof windows
Flat Roofing
Roofing general
Kitchen design
Kitchen worktops
Kitchen tiling
Kitchen installation

Case studies

Loft conversion

  • 14 Apr 2023
  • Northolt

Side & Rear extension

  • 15 Jul 2022
  • Maidenhead

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Customer testimonials

16 Jul 2023

Are a really reliable, personable, efficient company, led by Raj. During the project Raj promised to be reliable and do the best job and he didn’t let me down. He and his team remain could be depending on, arriving early every day and responding swiftly to any questions or queries around the project, working both reliable and flexible in the preparation, or project development. Communication as always open, to overcame unexpectedly challenges, always willing to offer advice or expert professional referrals (such as when we requires structural calculations). Raj was a guiding force on the process. After the completion of the project Raj has remained on call for any snagging and ensuring we remain a very satisfied customer. Raj over the journey became a friend and was a pleasure to work - Lisa


19 Jun 2023

Raj and the team from Alfa Home Extensions recently completed my Garage extension and conversion for me to a very high standard which my family and I are ecstatic with. The entire project was on budget and finished earlier than expected due to the diligent hard work and professionalism of the team and the leadership and positive mindset of Raj (No issue was ever a problem, it was always about finding solutions). I fully recommend Alfa Home Extensions for your next project. - Dilshan Swaris

uxbridge ub10

22 Jul 2022

I contacted Alfa Construction London Limited to quote for my rear extension project after being recommended by a neighbor who had recently had an extension completed by Alfa. The scope of the extension included a vaulted ceiling plus conversion of an out door storeroom into a utility room along with 2 patio doors and 2 sky lights in the roof. The end result was a perfect 10/10. Its rare to find builders who have a consistent attention to the smallest details - made great suggestions and cleaned up at the end of each working day which made a world of difference as we were living in the property through out the build. Highly recommended and at a fair price given the quality of work. - Mr R Johnson


21 Jul 2022

Amazing work completed. Single storey extension complete from foundations up. All complete in about 4 weeks. Minimum disruption and flawless work. Very happy with the building and builders - Chetan Bakrania


20 Jul 2022

Based on the recommendations from a friend, I engaged Mr. Raj to undertake a major refurbishment work in North London. The works involved demolition of old kitchen, undertake rear and side extension of the house, design and build a new kitchen, underfloor heating and complete refurbishment of the ground floor and the first floor. Mr Raj not only brought his A-team but helped me with Party wall award, dealing with a difficult and nosy neighbor, arrange building control inspector, procurement of boiler, doors, windows and other materials that was contractually my obligations. In every dealing, I was provided with direct and transparent pricing and guidance on quality and suitability of equipment without prejudice. Special thanks to all the entire team for their professionalism, patience in dealing with me and answering all my questions - no matter how insignificant or critical the query was. - Preet


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