Two-storey extensions in Kilburn
Everything for a two-storey extension in Kilburn, in one place: types, guide prices for London, the approval rules in England and how to get started.
Kilburn at a glance
- Postcode districts
- NW6
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Hampstead (0.6 miles), Belsize Park (0.9 miles), Cricklewood (1.1 miles), Highgate (1.6 miles)
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission.
We cover Kilburn (NW6) and the places around it, including Hampstead (0.6 miles), Belsize Park (0.9 miles) and Cricklewood.
Extensions available in Kilburn
Two-storey rear extensions
Our London guide starts at £67,000 for this type.
Learn more
Two-storey side extensions
Design, approvals and build for Kilburn homes. Guide from £103,500.
Learn more
Two-storey wraparound extensions
From £144,500 in Kilburn. Free visit to firm it up.
Learn more
Part single, part two-storey extensions
Kilburn guide price from £86,500, Standard spec.
Learn more
Extensions over a garage
Design, approvals and build for Kilburn homes. Guide from £38,000.
Learn more
First-floor extensions
From £30,000 in Kilburn. Free visit to firm it up.
Learn more
Two-storey extensions for semi-detached houses
From £67,000 in Kilburn. Free visit to firm it up.
Learn more
Two-storey extensions for detached houses
Kilburn guide price from £103,500, Standard spec.
Learn more
Kitchen extensions with bedrooms above
For homes in Kilburn: typical guide from £67,000 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
For homes in Kilburn: typical guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Greater London, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in Greater London
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Kilburn
Kilburn is in England. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission. Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
The full England rules explained
Questions about extensions in Kilburn
Do you cover Kilburn?
Yes. We cover Kilburn (NW6) and the surrounding area, including Hampstead and Belsize Park. The first site visit is free.
What does a two-storey extension cost in Kilburn?
Using our London guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £67,000–£90,500 including VAT. An extension over a garage is about £38,000–£55,000.
Which other places near Kilburn do you cover?
Everywhere around it, including Hampstead (0.6 miles), Belsize Park (0.9 miles) and Cricklewood (1.1 miles), and the rest of Greater London.