Wembley, Greater London
Two-storey rear extension in Wembley
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Wembley and want to know what a two-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Wembley is covered from our Greater London round, including HA0, HA9 and UB6. Two-storey rear extensions suit semi-detached houses in Wembley best, where the extra bedroom matters as much as the bigger kitchen.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a two-storey rear extension cost in Wembley?
A two-storey rear extension in Wembley is priced at £2,340–£3,510 per square metre including VAT as a guide, before kitchen fit-out and fees. London prices sit at the top of our range because of labour rates, access through the house, parking suspensions and skip licences.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £70,000–£105,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £112,500–£168,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a two-storey rear extension in Wembley?
Planning for a two-storey rear extension in Wembley follows the English householder rules.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Wembley like to extend?
Much of Wembley is 1920s and 1930s semis and short terraces with longer gardens than inner London, which suit full-width single-storey rear extensions. Parking suspensions, skip licences and controlled hours on residential streets shape the programme more than the build itself.
How a two-storey rear extension in Wembley comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Two-storey rear extensions near Wembley
We also build two-storey rear extensions in nearby Sudbury (1.2 miles) and Harrow on the Hill (2.1 miles).
- Two-storey rear extension in Sudbury
- Two-storey rear extension in Harrow on the Hill
- Two-storey rear extension in Harlesden
- Two-storey rear extension in Harrow
- Two-storey rear extension in West Ealing
Other work in Wembley:
FAQ
Two-storey rear extension questions in Wembley
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Do you handle building control in Wembley?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Can it be built on a terraced house?
Sometimes, but the upper floor is harder to get through planning on a terrace because of the effect on neighbours. A single-storey extension with a loft conversion is often an easier route.
How long does a rear extension take to build in Wembley?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Is the site visit in Wembley free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
What postcode areas do you cover around Wembley?
Including HA0, HA9 and UB6, and the surrounding Greater London area.