Two-storey extensions in Crouch End
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Crouch End.
Crouch End at a glance
- Postcode districts
- N8
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Hornsey (0.5 miles), Stroud Green (0.6 miles), Archway (1 mile), Harringay (1.1 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 postcode district N8 in and around Crouch End, along with neighbouring Hornsey, Stroud Green and Archway.
Extensions available in Crouch End
Two-storey rear extensions
From £67,000 in Crouch End. Free visit to firm it up.
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Two-storey side extensions
Crouch End guide price from £103,500, Standard spec.
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Two-storey wraparound extensions
Design, approvals and build for Crouch End homes. Guide from £144,500.
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Part single, part two-storey extensions
Crouch End guide price from £86,500, Standard spec.
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Extensions over a garage
Design, approvals and build for Crouch End homes. Guide from £38,000.
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First-floor extensions
Crouch End guide price from £30,000, Standard spec.
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Two-storey extensions for semi-detached houses
Our London guide starts at £67,000 for this type.
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Two-storey extensions for detached houses
For homes in Crouch End: typical guide from £103,500.
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Kitchen extensions with bedrooms above
Crouch End guide price from £67,000 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Design, approvals and build for Crouch End homes. Guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Crouch End, with a rough idea of the approval route and cost for each.
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 Crouch End
Crouch End 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 Crouch End
Do you cover Crouch End?
Yes. We cover Crouch End (N8) and the surrounding area, including Hornsey and Stroud Green. The first site visit is free.
What does a two-storey extension cost in Crouch End?
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 Crouch End do you cover?
Everywhere around it, including Hornsey (0.5 miles), Stroud Green (0.6 miles) and Archway (1 mile), and the rest of Greater London.