Greater London · England

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

Which 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

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.

Nearby towns

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