Ashtead, Surrey
Two-storey rear extension in Ashtead
Thinking about a two-storey rear extension in Ashtead? A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
We cover Ashtead (KT18, KT21 and KT22) as part of our Surrey work. Two-storey rear extensions suit semi-detached houses in Ashtead 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 Ashtead?
A two-storey rear extension in Ashtead is priced at £2,020–£3,020 per square metre including VAT as a guide, before kitchen fit-out and fees. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £60,500–£90,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £97,000–£145,000 |
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 Ashtead?
The planning route for a two-storey rear extension in Ashtead is set by England's householder rules and your council.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Ashtead like to extend?
Around Ashtead the housing ranges from inter-war semis to 1960s and 1970s estates with good-sized gardens. Many of the newer estates had permitted development rights removed by condition, so we check the planning history before anything is drawn.
How a two-storey rear extension in Ashtead 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Ashtead
From Ashtead, the nearest places we also cover are Leatherhead (1.7 miles) and Epsom (2.0 miles).
- Two-storey rear extension in Leatherhead
- Two-storey rear extension in Epsom
- Two-storey rear extension in Ewell
- Two-storey rear extension in Chessington
- Two-storey rear extension in Great Bookham
Other work in Ashtead:
FAQ
Two-storey rear extension questions in Ashtead
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.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Will we need to move out?
Rarely. The first-floor opening is made late in the job and sealed with temporary screens.
What postcode areas do you cover around Ashtead?
Including KT18, KT21 and KT22, and the surrounding Surrey area.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Do I need planning permission for a rear extension in Ashtead?
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.