Your Local Experts in Home Renovation & New Builds
Specialists in renovations, extensions, loft conversions and new builds across North West London
Tell Us About Your Project
- Services Overview
Quality You Can Count On
Sanfair Construction is a residential construction company delivering quality building work for homeowners across Mill Hill and nearby areas. Since 2019, the business has grown through referrals, repeat work, and a reputation for being fair, reliable, and professional.
- Why Choose Sanfair Construction
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.
- Featured Projects
A Closer Look at Our Work
- Testimonials
Homeowners trust Sanfair Construction for reliable service, clear communication, and quality results.
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★★★★★
- Service Area
Serving Mill Hill and Beyond
- Based around Mill Hill, Sanfair Construction works across the surrounding areas within roughly a 30-minute radius.
- Featured Blogs
Helpful Insights for Homeowners
The four main loft conversion types explained for North London homes – 1930s semis, Victorian terraces and detached houses – with honest pros, cons and costs.
Do you need planning permission for a loft conversion in Barnet or Mill Hill? Usually not – here's when permitted development covers you, when it doesn't, and what Building Control needs.
Honest 2026 loft conversion prices for Mill Hill, Barnet and NW London – by type, plus the things that push the price up or down.