Frimley, Surrey
Single-storey rear extension in Frimley
Ground-floor space across the back of the house, usually for a kitchen, dining or family room. We design, get the approvals for and build single-storey rear extensions in Frimley and the surrounding area, with one contract from the first survey to building control sign-off.
Frimley and its postcode districts GU15, GU16 and GU19 are part of our Surrey coverage. A single-storey rear extension in Frimley is mostly built from the garden side, so the house stays usable for most of the job.
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 single-storey rear extension cost in Frimley?
Guide prices for a single-storey rear extension in Frimley start from our South East England rate of £2,130–£3,470 per square metre, including VAT. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £25,500–£41,500 |
| 4 m wide × 5 m deep (20 m²) | £42,500–£69,500 |
| 4 m wide × 6 m deep (24 m²) | £51,000–£83,500 |
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 single-storey rear extension in Frimley?
Planning for a single-storey rear extension in Frimley follows the English householder rules.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
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 Frimley like to extend?
Commuter semis and detached houses make up much of Frimley, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a single-storey rear extension in Frimley 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.
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.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Single-storey rear extensions near Frimley
We also build single-storey rear extensions in nearby Camberley (1.4 miles) and Farnborough (1.6 miles).
- Single-storey rear extension in Camberley
- Single-storey rear extension in Farnborough
- Single-storey rear extension in Sandhurst
- Single-storey rear extension in Yateley
- Single-storey rear extension in Crowthorne
Other work in Frimley:
FAQ
Single-storey rear extension questions in Frimley
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.
What postcode areas do you cover around Frimley?
Including GU15, GU16 and GU19, and the surrounding Surrey area.
Can I stay in the house during the build?
Usually yes. The noisiest, dustiest stage, removing the back wall, is kept to the final weeks and screened off. Most families set up a temporary kitchen elsewhere in the house.
Is the site visit in Frimley free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Frimley?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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.