Saffron Walden, Essex
Kitchen-diner rear extension in Saffron Walden
Kitchen-diner rear extension in Saffron Walden: an open-plan kitchen, dining and family room that opens straight onto the garden. We measure the house, show you what the rules allow, price it in writing and build it.
Saffron Walden and its postcode districts CB10 are part of our Essex coverage. A kitchen-diner is often the reason people in Saffron Walden extend: the back kitchen in post-war semis and newer 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 Saffron Walden?
A kitchen-diner rear extension in Saffron Walden is priced at £2,010–£3,290 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 Saffron Walden?
Planning for a kitchen-diner rear extension in Saffron Walden 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.
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 Saffron Walden like to extend?
Post-war semis and newer estates are typical of Saffron Walden, 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 Saffron Walden 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
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.
Kitchen-diner rear extensions near Saffron Walden
Neighbouring places we cover include Haverhill (9.3 miles) and Bishops Stortford (11.1 miles).
- Kitchen-diner rear extension in Haverhill
- Kitchen-diner rear extension in Bishops Stortford
- Kitchen-diner rear extension in Royston
- Kitchen-diner rear extension in Cambridge
- Kitchen-diner rear extension in Braintree
Other work in Saffron Walden:
FAQ
Kitchen-diner rear extension questions in Saffron Walden
What postcode areas do you cover around Saffron Walden?
Including CB10, and the surrounding Essex area.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Where does the cooker extraction go?
Through the new wall or roof, ducted to outside. Recirculating hoods are possible but less effective.
How much does a kitchen-diner rear extension cost in Saffron Walden?
As a guide, £2,010–£3,290 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £24,000–£39,500 at that rate. Your written price follows the survey.
Is the site visit in Saffron Walden free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Saffron Walden?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.