Kempston, Bedfordshire
Kitchen-diner rear extension in Kempston
Thinking about a kitchen-diner rear extension in Kempston? An open-plan kitchen, dining and family room that opens straight onto the garden. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Kempston and its postcode districts MK42 are part of our Bedfordshire coverage. We usually keep the working kitchen where the old one was and put the dining table in the new space by the doors, which suits most Kempston homes.
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 Kempston?
Guide prices for a kitchen-diner rear extension in Kempston start from our East of England rate of £2,010–£3,290 per square metre, including VAT. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £24,000–£39,500 |
| 4 m wide × 5 m deep (20 m²) | £40,500–£65,500 |
| 4 m wide × 6 m deep (24 m²) | £48,500–£79,000 |
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 kitchen-diner rear extension in Kempston?
The planning route for a kitchen-diner rear extension in Kempston is set by England's householder rules and your council.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part 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 Kempston like to extend?
Post-war semis and newer estates are typical of Kempston, and many have room for a full-width extension. Shrinkable clay is common in the East of England, so foundations near trees and hedges are designed to NHBC-style depth guidance.
How a kitchen-diner rear extension in Kempston 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Kempston
From Kempston, the nearest places we also cover are Kempston Hardwick (1.8 miles) and Bedford (1.9 miles).
- Kitchen-diner rear extension in Kempston Hardwick
- Kitchen-diner rear extension in Bedford
- Kitchen-diner rear extension in Ampthill
- Kitchen-diner rear extension in Flitwick
- Kitchen-diner rear extension in Sandy
Other work in Kempston:
FAQ
Kitchen-diner rear extension questions in Kempston
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.
Can you match the brick or stone on my Kempston house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How big should a kitchen-diner be?
Around 25 to 35 m² for the combined kitchen, dining and seating areas suits most family homes. Your survey shows what fits the house.
How long does a rear extension take to build in Kempston?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do you handle building control in Kempston?
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 Kempston?
Including MK42, and the surrounding Bedfordshire area.