Two-storey extensions in Totteridge
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Totteridge.
Totteridge at a glance
- Postcode districts
- N20
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Barnet (1.2 miles), New Barnet (1.5 miles), East Barnet (1.9 miles), Finchley (2.2 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.
Around Totteridge we also work in Barnet, New Barnet and East Barnet, and across the rest of Greater London. Postcode district in and near Totteridge: N20.
Extensions available in Totteridge
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 Totteridge homes. Guide from £103,500.
Learn more
Two-storey wraparound extensions
Our London guide starts at £144,500 for this type.
Learn more
Part single, part two-storey extensions
For homes in Totteridge: typical guide from £86,500.
Learn more
Extensions over a garage
Totteridge guide price from £38,000, Standard spec.
Learn more
First-floor extensions
For homes in Totteridge: typical guide from £30,000.
Learn more
Two-storey extensions for semi-detached houses
Design, approvals and build for Totteridge homes. Guide from £67,000.
Learn more
Two-storey extensions for detached houses
Totteridge guide price from £103,500, Standard spec.
Learn more
Kitchen extensions with bedrooms above
For homes in Totteridge: typical guide from £67,000 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
For homes in Totteridge: 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 Totteridge
Totteridge 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 Totteridge
Do you cover Totteridge?
Yes. We cover Totteridge (N20) and the surrounding area, including Barnet and New Barnet. The first site visit is free.
What does a two-storey extension cost in Totteridge?
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 Totteridge do you cover?
Everywhere around it, including Barnet (1.2 miles), New Barnet (1.5 miles) and East Barnet (1.9 miles), and the rest of Greater London.