About us


Aon Building Contractors is a London builders firm. We provide a complete service from design, architecture, construction, project management and completion. We deal with all relevant paperwork including structural engineering, building control and if necessary, planning permission on you behalf.

We are pride ourselves on our high standards, good reputation and completing our projects on budget and on time. We have over 20 years experience in property renovation in London and its environs.

Aon Building Contractors began in the early 1990s as Mahogany Carpenters and Joiners who specialised in hand-made wardrobes, cupboards, shelves and bespoke kitchens. We also built loft conversions, extensions and general building carpentry, such as stud-walls, doors, roofs and floors. The experience gained over the years in carpentry within the domestic building industry led to us offering a full building service, including carpentry and joinery, as the main contractor.

london builders carpenter

We are Government Approved electrical installers registered with Elesca, (Reg No: 37723) This ensures that we are able to meet all electrical safety requirements and issue all legally required certificates and guarantees in-house.

We undertake standard wiring installations such as electrical wall sockets, TV (or sky) and telephone outlets for each room, including kitchens and bathrooms requiring relevant isolators for safety in damp/wet environments and taking into consideration your choice of fittings – standard white or other finished wall plate.

We are also adept at covering your high-end requirements including audio/visual multimedia, remote controlled lighting and appliances, internet connected CCTV security, IP-rated (bathroom safe) televisions systems and more.

london builders elecsa

Central Heating
Aon Building Contractors Ltd is registered with the Gas Safe Register (Reg No: 501199). We are Government approved to carry out all gas pipework, cooker, boiler and fireplace installations and to issue relevant certificates and notify building control as required by law.

Boiler type is dependent on the installation requirements and may be a Combi (for smaller dwellings) or full system boilers with water storage tanks in loft (or basement) and hot water cylinder. These can include a pump to boost the water pressure.

All boilers we fit are rated SEBUK ‘A’ – condensing boilers with an efficiency rating of 95% and above.

We also install decorative effect gas fires and fire surrounds. Under-floor heating with independent control to individual zones in concrete or wooden joist floors, fitted to existing or new boiler systems.

london builders gas

AON Building Contractors sponsors the North London Taekwondo clubs with over 100 members