Walton-on-Thames, Surrey
Kitchen-diner rear extension in Walton-on-Thames
We plan and build kitchen-diner rear extensions for homeowners in Walton-on-Thames. 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.
Walton-on-Thames sits in Surrey, with postcode districts including KT12, TW16 and TW17. For Walton-on-Thames kitchens we plan the extraction route and the island drainage before the slab is poured, so nothing has to be chased in later.
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 Walton-on-Thames?
For Walton-on-Thames we work from the South East England rate: £2,130–£3,470 per square metre of new floor, including VAT, standard specification. 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 kitchen-diner rear extension in Walton-on-Thames?
Here is how the rules in England apply to a kitchen-diner rear extension in Walton-on-Thames.
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 Walton-on-Thames like to extend?
Commuter semis and detached houses make up much of Walton-on-Thames, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a kitchen-diner rear extension in Walton-on-Thames 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Walton-on-Thames
Neighbouring places we cover include Sunbury-on-Thames (1.2 miles) and Shepperton (1.7 miles).
- Kitchen-diner rear extension in Sunbury-on-Thames
- Kitchen-diner rear extension in Shepperton
- Kitchen-diner rear extension in West Molesey
- Kitchen-diner rear extension in Weybridge
- Kitchen-diner rear extension in Esher
Other work in Walton-on-Thames:
FAQ
Kitchen-diner rear extension questions in Walton-on-Thames
Can you match the brick or stone on my Walton-on-Thames house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What postcode areas do you cover around Walton-on-Thames?
Including KT12, TW16 and TW17, and the surrounding Surrey area.
Should the sink face the garden?
If the plan allows, an island sink or hob facing the glass is a common choice. It needs a floor-level drain run, which is easy to lay in a new slab.
Do I need planning permission for a rear extension in Walton-on-Thames?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Do you handle building control in Walton-on-Thames?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
How much does a kitchen-diner rear extension cost in Walton-on-Thames?
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.