Two-storey extensions in Holloway
Need more room in Holloway? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Holloway at a glance
- Postcode districts
- N7
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Barnsbury (0.9 miles), Highbury (1.1 miles), Archway (1.1 miles), Camden Town (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 N7 in and around Holloway, along with neighbouring Barnsbury, Highbury and Archway.
Extensions available in Holloway
Two-storey rear extensions
Guide from £67,000 in Holloway, including VAT.
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Two-storey side extensions
For homes in Holloway: typical guide from £103,500.
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Two-storey wraparound extensions
For homes in Holloway: typical guide from £144,500.
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Part single, part two-storey extensions
For homes in Holloway: typical guide from £86,500.
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Extensions over a garage
Guide from £38,000 in Holloway, including VAT.
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First-floor extensions
Design, approvals and build for Holloway homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
Guide from £67,000 in Holloway, including VAT.
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Two-storey extensions for detached houses
Design, approvals and build for Holloway homes. Guide from £103,500.
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Kitchen extensions with bedrooms above
Design, approvals and build for Holloway homes. Guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Guide from £67,000 (plus en-suite) in Holloway, including VAT.
Learn moreWhich type suits your house?
Which type suits your house in Holloway depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
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 Holloway
Holloway 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 Holloway
Do you cover Holloway?
Yes. We cover Holloway (N7) and the surrounding area, including Barnsbury and Highbury. The first site visit is free.
What does a two-storey extension cost in Holloway?
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 Holloway do you cover?
Everywhere around it, including Barnsbury (0.9 miles), Highbury (1.1 miles) and Archway (1.1 miles), and the rest of Greater London.