Building Work You Can Rely On

From renovations and extensions to full new builds, every project is delivered with care, professionalism and attention to detail.

House Extensions in North West London

Single and double storey extensions that add usable space, improve how a home works day to day, and add long-term value to the property.

Sanfair Construction designs and builds house extensions in London for homeowners looking to create more space without the cost or upheaval of moving. Each project is carefully planned around the existing property so the new space looks like a natural part of the home, not an obvious addition.

Work typically includes rear extensions, side return extensions, wrap-arounds and double storey extensions across North West London. From planning and structural work through to brickwork, glazing and internal finish, the full job is managed end to end by experienced extension builders, so homeowners have one trusted point of contact throughout.

Recent Renovation Projects

What Sets Sanfair Apart

Clients choose Sanfair Construction for quality workmanship, a fair and straightforward approach, and a strong focus on delivering work properly from start to finish.

01 Quality Workmanship

Built with care, attention to detail, and a focus on getting the job done properly.

02 Fair and Straightforward Approach

Clear communication, honest service, and a practical approach from start to finish.

03 Trusted by Homeowners

A reputation built through referrals, repeat work, and word of mouth.

04 Residential Project Focus

Experienced across renovations, extensions, loft conversions, structural works, and new builds.

Discuss Your Project

If you're planning a renovation project, get in touch to discuss your requirements and next steps.