Loft conversions in North London.

North London · N2 · North London house, reconfigured and fitted outCase study

An extra bedroom under a North London roof. Usually at the back, modest in size and matched to the street.

A new floor under a North London roof.

Rear first: Dormers set back, ideally behind
No Class B: Roof rights removed in conservation areas
7 days: A budget estimate, typically

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle loft conversions, dormers and mansards in North London NW and N. A main dormer loft typically runs £90k to £140k. A mansard loft runs £140k to £220k. Call 020 7731 6841, and a budget estimate typically follows within seven days.

North London roofs are seen from far away, because the streets climb. A front dormer can spoil a whole terrace line. So Camden and the neighbourhood plans steer rooms to the rear.

Inside a conservation area, roof permitted development does not apply. That covers Hampstead, Primrose Hill and much of Highgate. A dormer there needs planning permission.

We measure the roof and the stair before drawing a room. Head height, the new stair and fire escape often decide the layout. Then the dormer is sized to match its neighbours.

A flat has no householder rights at all. Lease consent may also be needed, so we check it early.

What the councils allow on a North London roof.

Council: London Borough of Camden, under its Local Plan adopted in July 2017.
Hampstead plan: Policy DH1. Extensions stay subservient. Dormers are modest, set back, ideally behind.
Matching: A dormer should follow its neighbours in rhythm, scale and materials.
Converted flats: A flat has no householder permitted development rights. The lease matters too.
Listed houses: Listed building consent is needed, even where planning permission is not.

Source: Camden Local Plan 2017, Camden’s Basements guidance 2021, and the Hampstead plan 2025. Read on 5 October 2026. Policies change, so we read them again for your address.