Builders in Mill Hill

Loft conversions, extensions, renovations and new builds for homes in Mill Hill NW7 and the surrounding areas.

Building Work in Mill Hill, NW7

From 1930s semis in Mill Hill East to larger detached houses around the village and The Ridgeway, Sanfair takes on the loft, extension, structural and renovation work that gives a Mill Hill home more room.

Sanfair Constructions works across Mill Hill and the surrounding parts of North West London, on projects that range from a single loft conversion or rear extension to full house renovations and new builds. Mill Hill’s housing is largely inter-war semi-detached and detached houses, with older Victorian and Edwardian property closer to Mill Hill Broadway and larger plots towards Totteridge and Arkley. Each of these house types has its own quirks, and we build to suit the property in front of us rather than to a one-size-fits-all plan.

What we do in Mill Hill

Our core services are loft conversions (dormer, hip-to-gable, mansard and rooflight), house extensions (single and double-storey, side-return and kitchen extensions), house renovations, structural works such as steel beams and wall removals, new builds and high-end residential projects. We work from your architect’s drawings and engineer’s calculations and take the project from first fix through to decoration and handover.

Planning and building control in Mill Hill

Mill Hill sits within the London Borough of Barnet, so Barnet Council is the planning authority and the building control body for most projects here. Many loft conversions and single-storey rear extensions on houses fall under permitted development, but the allowances change if the house is in a conservation area (Mill Hill village is one), if it is a flat or maisonette, or if earlier owners have already extended. We cover what that means in practice in our guides to planning permission for a loft conversion in Barnet and what a house extension costs in North London.

Recent work nearby

Recent Sanfair projects in and around NW7 include a loft conversion in Mill Hill and a full renovation of a Mill Hill house, both shown in the project gallery below, along with extensions in neighbouring Barnet. You can see more on our projects page.

If you are planning work on a house in Mill Hill, call us on 07455 908835 or use the form on our contact page and we will come and look at the property with you.

Recent Projects in Mill Hill and Nearby

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.

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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 Mill Hill Project

If you're planning a loft, extension, renovation or new build in Mill Hill, get in touch to discuss your project and arrange a site visit.