Amersham, Buckinghamshire
Bungalow rear extension in Amersham
We plan and build rear extensions for bungalows for homeowners in Amersham. Single-storey rear extensions that keep everything on one level. Start with a free site visit, then a written price once the design is agreed.
Amersham sits in Buckinghamshire, with postcode districts including HP6 and HP7. For Amersham bungalows we design the roof first, because the low eaves decide the height of the new room.
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 bungalow rear extension cost in Amersham?
Guide prices for a bungalow rear extension in Amersham start from our South East England rate of £2,070–£3,360 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) | £25,000–£40,500 |
| 4 m wide × 6 m deep (24 m²) | £49,500–£80,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Amersham?
Planning for a bungalow rear extension in Amersham follows the English householder rules.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
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 Amersham like to extend?
Commuter semis and detached houses make up much of Amersham, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a bungalow rear extension in Amersham 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.
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.
Bungalow rear extensions near Amersham
We also build rear extensions for bungalows in nearby Amersham on the Hill (0.7 miles) and Chesham (2.4 miles).
- Bungalow rear extension in Amersham on the Hill
- Bungalow rear extension in Chesham
- Bungalow rear extension in Beaconsfield
- Bungalow rear extension in Chorleywood
- Bungalow rear extension in Chalfont St Peter
Other work in Amersham:
FAQ
Bungalow rear extension questions in Amersham
How long does a rear extension take to build in Amersham?
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 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.
Will the roof look odd?
Not if the pitch and tiles match. Where the eaves are low, a flat-roofed section with a lantern is an alternative.
Do you handle building control in Amersham?
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.
What postcode areas do you cover around Amersham?
Including HP6 and HP7, and the surrounding Buckinghamshire area.