Highams Park, Greater London
Two-storey rear extension in Highams Park
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Highams Park 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.
Highams Park is covered from our Greater London round, including E4, E17 and IG8. In Highams Park, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted.
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 Highams Park?
In Highams Park, our guide for a two-storey rear extension is £2,340–£3,510 per square metre including VAT for a standard specification. 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a two-storey rear extension in Highams Park?
Whether your two-storey rear extension in Highams Park needs a planning application depends on its size, your house and any local restrictions.
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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Highams Park like to extend?
Period terraces in Highams Park sit alongside flats, and the difference matters: houses usually keep permitted development rights, while flats and maisonettes need planning permission for any rear extension.
How a two-storey rear extension in Highams Park comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Two-storey rear extensions near Highams Park
Close by, we work in Woodford Green, about 1.3 miles away, and Walthamstow, about 1.3 miles away.
- Two-storey rear extension in Woodford Green
- Two-storey rear extension in Walthamstow
- Two-storey rear extension in Chingford
- Two-storey rear extension in Snaresbrook
- Two-storey rear extension in Buckhurst Hill
Other work in Highams Park:
FAQ
Two-storey rear extension questions in Highams Park
Do I need planning permission for a rear extension in Highams Park?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
What postcode areas do you cover around Highams Park?
Including E4, E17 and IG8, and the surrounding Greater London area.
Can I add an en-suite upstairs?
Yes. We plan the soil pipe route early so the bathroom sits where drainage works without boxing through the room below.
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 I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Is the site visit in Highams Park free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.