Alfa Construction specialises in all building works from extensions, loft conversions, renovations, bathroom & kitchen fittings.  We work with the largest and most reputable suppliers across the building trade, from builders merchants, tiling specialists, kitchen suppliers & bedroom suppliers.  All brick works and roofing work is done in-house with our vastly experienced team.  We also specialise in shell only structures, this works well with clients, who are carpenters or electricians, we create the structure, from foundations, DPC, brick work, sub floor, roof joists and all roofing works, either tiling, felt or GRP. 

If you would like to discuss your project, then please do not hesitate to call or email. 

Trades offered

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

Case studies

Side & Rear extension

  • 15 Jul 2022
  • Maidenhead

Rear extension in Aylesbury

  • 10 Sep 2021
  • Aylesbury

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Customer testimonials

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


20 Jul 2022

Raj is very understanding and accommodating and completed the jobs on time. - Jaspal Toor


20 Jul 2022

Team Alfa Construction London Ltd. was very efficient with their whole work process and also the speed at which they carried out our loft conversion project. They not only completed it within the time-frame given but they also managed to carry out all the extra work that was added on by us along the way within that time. The level of finish speaks volumes of their work ethics and makes us very happy that we chose them to carry out our project. We would definitely be recommending them to all our family and friends for their own projects - Amardeep Toor


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