Are you looking for established builders in North London? We are fast, reliable and we will efficiently carry out any building work on your house. Whether you're looking for full home refurbishment, loft conversion, rear extension or to refurbish your bathroom and kitchen, AIA Building Contractors have the skills, knowledge and experience to effectively transform your home into the abode of your dreams! Thousands of satisfied customers in Barnet, Walthamstow, Harringey and all areas of North London recommend us -  we are builders who live up to their reputation!

House rear extension with glass sliding doors in Barnet, EN4
Electrician joining wires in electrical junction box on wall
Interior of modern loft conversion with velux windows in Haringey, N15

You can significantly benefit from a simple side, rear or wraparound home extension. The possibilities are endless!

We'll carry out all types of  electrical and plumbing work to British standards w/ all relevant certifications.

Our stunning loft conversions can transform your unused loft space in to a bright and airy living area or workspace.


“We bought a three-bedroom Victorian house near Walthamstow Village and we needed to renovate the whole property before moving in. Professional, friendly, reliable and efficient they worked to an excellent standard. A wonderful all-round service, with good results, produced on time!! AIA Building Contractors were a pleasure to deal with. A true leader in the industry!”

Thomas McCarthy, Walthamstow, E17

“AIA Building Contractors have completed quite a few projects for us over the past seven years. These include a new kitchen, bathroom and a loft conversion. They are reliable, amenable and dependable team, whose work has always been of the highest standard. We depend on AIA Building Contractors for their personal, caring and professional service and continue to recommend them to family and friends.”

Zach Bennett, Haringey, N15

“After spending several weeks trying to find builders who would quote for the refurbishment of my family home in Barnet and having experienced only no-shows and poor service, I was immediately impressed with the professional way AIA Building Contractors approached the job. Appointments were confirmed by e-mail within minutes of being made and personnel arrived on time every single day.”


​Zoe Owen, Barnet, EN4