Two-storey extensions in Edgware
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Edgware.
Edgware at a glance
- Postcode districts
- HA8, NW7 and NW9
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Harrow Weald (2.7 miles), Wealdstone (2.8 miles), Borehamwood (2.9 miles), Harrow (3.4 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 Edgware we also work in Harrow Weald, Wealdstone and Borehamwood, and across the rest of Greater London. Postcode districts in and near Edgware: HA8, NW7 and NW9.
Extensions available in Edgware

Two-storey rear extensions
From £67,000 in Edgware. Free visit to firm it up.
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Two-storey side extensions
Design, approvals and build for Edgware homes. Guide from £103,500.
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Two-storey wraparound extensions
From £144,500 in Edgware. Free visit to firm it up.
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Part single, part two-storey extensions
Guide from £86,500 in Edgware, including VAT.
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Extensions over a garage
Edgware guide price from £38,000, Standard spec.
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First-floor extensions
Edgware guide price from £30,000, Standard spec.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Edgware homes. Guide from £67,000.
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Two-storey extensions for detached houses
Edgware guide price from £103,500, Standard spec.
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Kitchen extensions with bedrooms above
Our London guide starts at £67,000 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
Design, approvals and build for Edgware homes. Guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Edgware 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 Edgware
Edgware 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 Edgware
Do you cover Edgware?
Yes. We cover Edgware (HA8, NW7 and NW9) and the surrounding area, including Harrow Weald and Wealdstone. The first site visit is free.
What does a two-storey extension cost in Edgware?
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 Edgware do you cover?
Everywhere around it, including Harrow Weald (2.7 miles), Wealdstone (2.8 miles) and Borehamwood (2.9 miles), and the rest of Greater London.