Question 1

What extension types suit the interwar semis in North Finchley and East Finchley (N3/N12)?

Accepted Answer

The 1920s–1930s semi-detached houses across N3 and N12 have hipped roofs well-suited to hip-to-gable loft conversions, and rear gardens with sufficient depth for single-storey kitchen extensions. Most fall under permitted development. Side-return infill is less relevant than in Victorian terraces, but some semis have enough side clearance for a garden-room addition. TB&D assesses extension options on the first site visit.

Question 2

Does Finchley have any conservation areas affecting what external works I can do?

Accepted Answer

East Barnet and parts of North Finchley have conservation area designations that may restrict external alterations. TB&D checks each N3 and N12 address against Barnet Council's conservation area maps on the first site visit. Most residential streets in Finchley Central are not conservation-designated and fall under standard PD rules.

Question 3

How long does a dormer loft conversion take in Finchley?

Accepted Answer

A standard dormer loft conversion on a Finchley terrace or semi — including structural steels, dormer build, staircase, insulation, plasterboard, electrics and plumbing for an en-suite — typically takes 10–14 weeks from start to handover. TB&D Construction returns an itemised quote within 48 hours of the site visit and provides weekly progress updates throughout the build.

Builders inFinchley.

Services we deliver in Finchley

Nearby areas we also cover

Commonquestions, Finchley.

Let's talk about your project.

Builders inFinchley.

Services we deliver in Finchley

Nearby areas we also cover

CommonCommonquestions, Finchley.questions, Finchley.

Let's talkLet's talkabout your project.about your project.

Commonquestions, Finchley.

Let's talk about your project.