Amersham on the Hill, Buckinghamshire
Kitchen-diner rear extension in Amersham on the Hill
We plan and build kitchen-diner rear extensions for homeowners in Amersham on the Hill. An open-plan kitchen, dining and family room that opens straight onto the garden. Start with a free site visit, then a written price once the design is agreed.
Amersham on the Hill sits in Buckinghamshire, with postcode districts including HP5, HP6 and HP7. A kitchen-diner is often the reason people in Amersham on the Hill extend: the back kitchen in inter-war semis and 1960s estates is rarely big enough for a table.
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 kitchen-diner rear extension cost in Amersham on the Hill?
Guide prices for a kitchen-diner rear extension in Amersham on the Hill 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a kitchen-diner rear extension in Amersham on the Hill?
Whether your kitchen-diner rear extension in Amersham on the Hill needs a planning application depends on its size, your house and any local restrictions.
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.
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 Amersham on the Hill like to extend?
Around Amersham on the Hill 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 kitchen-diner rear extension in Amersham on the Hill comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
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.
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.
Kitchen-diner rear extensions near Amersham on the Hill
We also build kitchen-diner rear extensions in nearby Amersham (0.7 miles) and Chesham (1.8 miles).
- Kitchen-diner rear extension in Amersham
- Kitchen-diner rear extension in Chesham
- Kitchen-diner rear extension in Chorleywood
- Kitchen-diner rear extension in Beaconsfield
- Kitchen-diner rear extension in Chalfont St Peter
Other work in Amersham on the Hill:
FAQ
Kitchen-diner rear extension questions in Amersham on the Hill
Can you match the brick or stone on my Amersham on the Hill house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How much does a kitchen-diner rear extension cost in Amersham on the Hill?
As a guide, £2,130–£3,470 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £25,500–£41,500 at that rate. Your written price follows the survey.
Can I add a utility room?
Often. A narrow utility or boot room along one side keeps the washing machine out of the open-plan space.
How long does a rear extension take to build in Amersham on the Hill?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
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.