Walton-on-Thames, Surrey
Bungalow rear extension in Walton-on-Thames
Bungalow rear extension in Walton-on-Thames: single-storey rear extensions that keep everything on one level. We measure the house, show you what the rules allow, price it in writing and build it.
Walton-on-Thames is covered from our Surrey round, including KT12, TW16 and TW17. For Walton-on-Thames 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 Walton-on-Thames?
A bungalow rear extension in Walton-on-Thames is priced at £2,070–£3,360 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 Walton-on-Thames?
Planning for a bungalow rear extension in Walton-on-Thames 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 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 bungalow rear extension in Walton-on-Thames 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.
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.
Bungalow rear extensions near Walton-on-Thames
From Walton-on-Thames, the nearest places we also cover are Sunbury-on-Thames (1.2 miles) and Shepperton (1.7 miles).
- Bungalow rear extension in Sunbury-on-Thames
- Bungalow rear extension in Shepperton
- Bungalow rear extension in West Molesey
- Bungalow rear extension in Weybridge
- Bungalow rear extension in Esher
Other work in Walton-on-Thames:
FAQ
Bungalow rear extension questions in Walton-on-Thames
How long does a rear extension take to build in Walton-on-Thames?
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 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.
Is the site visit in Walton-on-Thames free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.