Extending your home in Ashford, Surrey
Every type of house extension in Ashford, Surrey, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsTW15, TW16, TW18
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
Which extension suits a Ashford, Surrey home?
The South East has a broad mix of 1930s semis, post-war estates, newer developments and period cottages, and many houses have enough garden for a generous rear extension.
For many houses here, double-storey extensions, wraparound extensions or single-storey rear extensions gives the most useful space for the budget.
Popular extension prices in Ashford, Surrey
Use these Ashford, Surrey guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £64,000 – £81,500 |
| Conservatory replacement extensions | 14 m² | £33,500 – £43,500 |
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Orangery extensions | 16 m² | £50,000 – £63,000 |
| Extensions over a garage | 12 m² | £28,000 – £36,500 |
| Single-storey rear extensions | 20 m² | £45,500 – £58,500 |
Ashford, Surrey and surrounding towns
We cover Ashford, Surrey and the postcode districts TW15, TW16, TW18. The same team covers Staines-upon-Thames (2 miles), Sunbury-on-Thames (3 miles), Walton-on-Thames (4 miles), West Molesey (4 miles), Egham (4 miles), all within easy reach. Feltham, in Greater London, is roughly 2 miles from Ashford, Surrey and also on our list.
Approvals for an extension in Ashford, Surrey
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
All extension types we build in Ashford, Surrey
- Side return extensions · from £20,000
- Kitchen extensions · from £30,000
- Bedroom extensions · from £29,000
- Flat roof extensions · from £23,500
- Orangery extensions · from £33,500
- Single-storey rear extensions · from £23,500
- Bungalow extensions · from £29,000
- Pitched roof extensions · from £24,500
- Double-storey extensions · from £42,500
- Glass box extensions · from £33,500
- Extensions over a garage · from £26,500
- Annexe extensions · from £61,500
- Porch extensions · from £4,450
- Planning permission for extensions · from £350
- Extension plans and drawings · from £1,300
- Home office extensions · from £17,500
- Building regulations for extensions · from £1,000
- Timber frame extensions · from £23,500
- Conservatory replacement extensions · from £22,000
- Wraparound extensions · from £40,000
- Utility and boot room extensions · from £15,500
- Side extensions · from £24,500
Free site visit
We visit your Ashford, Surrey home, measure up, talk through what you want and check the planning position.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Ashford, Surrey
How much does an extension cost in Ashford, Surrey?
Using our South East England factor (×1.12), a standard-spec single-storey extension of 20 m² is a guide £45,500 to £58,500 including VAT, and a 32 m² two-storey extension £64,500 to £84,500. Your written price follows the survey.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Ashford, Surrey, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Ashford, Surrey
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.