Skip to content
← Builders in Barnet

Areas we cover

Builders in Finchley

We extend, convert and renovate houses across Finchley, from the Edwardian streets around Church End to semi-detached houses in West Finchley and Woodside Park.

Planning authority
London Borough of Barnet
Postcode districts
N2, N3, N12
Our work here
Extensions, loft conversions and renovations
Kitchen-diner in a side-return extension of a Victorian terraced house, with a glazed roof along an exposed London stock-brick wall and glazed doors to a small courtyard
AI-generated illustration; not a completed Mirion project.

Our services in Finchley

We also take on auctions, bathrooms, design, driveways, kitchens, plumbing & heating, surveys and property development.

Homes in Finchley

Finchley has three town centres: Church End (Finchley Central), East Finchley and North Finchley, which only began to develop after the common was enclosed in the 1820s. The railway reached Finchley in 1867, and much of today's housing followed in the late Victorian, Edwardian and interwar years.

Finchley is more mixed than Barnet's outer suburbs. In the 2021 Census, 47% of households in Church End, Finchley Central, West Finchley and Woodside Park lived in houses, and 51% in flats. Houses here are valuable: median semi-detached prices in those areas were about £935,000 to £1.2 million in the year to March 2026.

Common projects include side-return and rear extensions on Edwardian terraces and semis, L-shaped dormers over back additions, and renovations that rework the ground floor of older houses.

Planning and practical notes for Finchley

Finchley has several conservation areas, including Finchley Church End, Finchley Garden Village and Moss Hall Crescent, with Hampstead Garden Suburb on its southern edge. Inside them, Barnet expects extensions to preserve or enhance the area's character, and permitted development rights are reduced.

Outside conservation areas, Barnet's 2026 guidance allows extensions to outriggers to run the full length of the side return, while wraparound extensions should not normally extend more than 3 metres beyond the outrigger's two-storey rear wall, or be more than 2 metres high on the boundary. L-shaped dormers over an original outrigger can be built under permitted development where rights exist; otherwise, where they are typical locally, they should cover no more than half the outrigger's depth and be set up 0.5 metres from the eaves.

Building work in Finchley: common questions

Usually. Barnet's 2026 guidance says extensions to outriggers can run the full length of the side return. Some single-storey side-return infills are permitted development outside conservation areas, but many need an application.

Finchley Church End, Finchley Garden Village and Moss Hall Crescent, with Hampstead Garden Suburb to the south. Barnet publishes a character appraisal or map for each.