Chertsey, Surrey
Two-storey rear extension in Chertsey
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Chertsey 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.
Chertsey sits in Surrey, with postcode districts including KT15, KT16 and TW17. In Chertsey, 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 Chertsey?
In Chertsey, our guide for a two-storey rear extension is £2,020–£3,020 per square metre including VAT for a standard specification. 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 Chertsey?
The planning route for a two-storey rear extension in Chertsey is set by England's householder rules and your council.
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 Chertsey like to extend?
Commuter semis and detached houses make up much of Chertsey, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a two-storey rear extension in Chertsey 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Chertsey
Close by, we work in Addlestone, about 1.3 miles away, and Weybridge, about 2.4 miles away.
- Two-storey rear extension in Addlestone
- Two-storey rear extension in Weybridge
- Two-storey rear extension in Shepperton
- Two-storey rear extension in Staines
- Two-storey rear extension in Egham
Other work in Chertsey:
FAQ
Two-storey rear extension questions in Chertsey
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.
How long does a rear extension take to build in Chertsey?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
Do you handle building control in Chertsey?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Chertsey?
Including KT15, KT16 and TW17, and the surrounding Surrey area.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.