House extensions in Brierley Hill
Looking to extend your home in Brierley Hill? Start here: extension types, guide prices for Brierley Hill, the planning rules that apply and how a project runs.
- Postcode districtsB64, DY2, DY5, DY6, DY8
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation
What extensions cost in Brierley Hill
Every figure below is a guide for Brierley Hill, adjusted for West Midlands build costs (×0.97) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £55,500 – £73,000 |
| Single-storey rear extensions | 20 m² | £39,500 – £50,500 |
| Wraparound extensions | 25 m² | £55,500 – £70,500 |
| Conservatory replacement extensions | 14 m² | £29,000 – £37,500 |
| Kitchen extensions | 20 m² | £40,500 – £51,500 |
Brierley Hill and surrounding towns
Site visits are available across Brierley Hill (B64, DY2, DY5, DY6, DY8). The same team covers Stourbridge (2 miles), Dudley (2 miles), Kingswinford (2 miles), Halesowen (4 miles), Tipton (4 miles), all within easy reach. For homes towards Worcestershire, Kidderminster is around 8 miles away.
Do extensions in Brierley Hill need planning permission?
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
What works best for Brierley Hill houses?
The West Midlands has a large stock of 1930s and post-war semi-detached houses, which are well suited to rear, side and over-garage extensions, plus Victorian terraces in the older inner areas.
Start by comparing extensions over a garage, double-storey extensions and kitchen extensions: between them they cover most of the layouts we see requested for houses like these.
All extension types we build in Brierley Hill
- Pitched roof extensions · from £21,500
- Side return extensions · from £17,000
- Annexe extensions · from £53,000
- Side extensions · from £21,000
- Building regulations for extensions · from £850
- Timber frame extensions · from £20,000
- Bungalow extensions · from £25,000
- Porch extensions · from £3,850
- Home office extensions · from £15,500
- Single-storey rear extensions · from £20,000
- Bedroom extensions · from £25,000
- Utility and boot room extensions · from £13,500
- Glass box extensions · from £29,000
- Conservatory replacement extensions · from £19,000
- Extensions over a garage · from £23,000
- Orangery extensions · from £29,000
- Kitchen extensions · from £26,000
- Double-storey extensions · from £36,500
- Flat roof extensions · from £20,000
- Planning permission for extensions · from £300
- Wraparound extensions · from £34,500
- Extension plans and drawings · from £1,150
Free site visit
We visit your Brierley Hill 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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
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 Brierley Hill
How much does an extension cost in Brierley Hill?
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.
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.
How long does an extension take in Brierley Hill?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Brierley Hill, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Brierley Hill?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
Book a free site visit in Brierley Hill
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.