Extensions in Kidderminster: design, planning and build
More space without moving: we plan and build extensions across Kidderminster, with one team for the drawings, the council and the build.
- Postcode districtsDY10, DY11, DY12
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation

Planning and building control in Kidderminster
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 extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
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).
Popular extension prices in Kidderminster
Prices on this page use our West Midlands factor of ×0.97, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £40,500 – £51,500 |
| Conservatory replacement extensions | 14 m² | £29,000 – £37,500 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Single-storey rear extensions | 20 m² | £39,500 – £50,500 |
| Double-storey extensions | 32 m² | £55,500 – £73,000 |
What works best for Kidderminster houses?
Across the West Midlands, brick-built semis with long gardens are common, so single-storey and two-storey rear extensions are popular choices.
For many houses here, single-storey rear extensions, extensions over a garage or double-storey extensions gives the most useful space for the budget.
Covering Kidderminster and nearby
Site visits are available across Kidderminster (DY10, DY11, DY12). We also work in nearby Stourport-on-Severn (4 miles), Bromsgrove (9 miles), Droitwich Spa (9 miles), Worcester (14 miles), Redditch (14 miles). Just over the West Midlands border, Stourbridge is about 7 miles away.
Choose an extension type
- Double-storey extensions · from £36,500
- Planning permission for extensions · from £300
- Utility and boot room extensions · from £13,500
- Home office extensions · from £15,500
- Single-storey rear extensions · from £20,000
- Building regulations for extensions · from £850
- Kitchen extensions · from £26,000
- Extensions over a garage · from £23,000
- Timber frame extensions · from £20,000
- Bungalow extensions · from £25,000
- Glass box extensions · from £29,000
- Side extensions · from £21,000
- Bedroom extensions · from £25,000
- Annexe extensions · from £53,000
- Conservatory replacement extensions · from £19,000
- Wraparound extensions · from £34,500
- Flat roof extensions · from £20,000
- Orangery extensions · from £29,000
- Pitched roof extensions · from £21,500
- Porch extensions · from £3,850
- Side return extensions · from £17,000
- Extension plans and drawings · from £1,150
Free site visit
We visit your Kidderminster home, measure up, talk through what you want and check the planning position.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Kidderminster
How much does an extension cost in Kidderminster?
Using our West Midlands factor (×0.97), a standard-spec single-storey extension of 20 m² is a guide £39,500 to £50,500 including VAT, and a 32 m² two-storey extension £55,500 to £73,000. Your written price follows the survey.
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.
How long does an extension take in Kidderminster?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Book a free site visit in Kidderminster
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.