House extensions in Stourbridge
From a small utility to a two-storey addition, we take on house extensions throughout Stourbridge, starting with a free visit and a planning check.
- Postcode districtsB63, B64, DY5, DY6, DY8, DY9
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation
Guide prices for Stourbridge
We publish guide prices so you can budget before anyone visits. For Stourbridge they are adjusted by ×0.97, the factor we use across West Midlands.
| 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 |
| Kitchen extensions | 20 m² | £40,500 – £51,500 |
| Extensions over a garage | 12 m² | £24,000 – £31,500 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
Areas we cover around Stourbridge
We cover Stourbridge and the postcode districts B63, B64, DY5, DY6, DY8, DY9. We also work in nearby Brierley Hill (2 miles), Kingswinford (3 miles), Dudley (4 miles), Halesowen (4 miles), Tipton (6 miles). For homes towards Worcestershire, Kidderminster is around 7 miles away.
Planning and building control in Stourbridge
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 Stourbridge 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.
Depending on the plot, single-storey rear extensions and kitchen extensions are often the strongest options, with double-storey extensions worth considering where there is room.
Choose an extension type
- Side return extensions · from £17,000
- Timber frame extensions · from £20,000
- Glass box extensions · from £29,000
- Conservatory replacement extensions · from £19,000
- Planning permission for extensions · from £300
- Porch extensions · from £3,850
- Building regulations for extensions · from £850
- Extension plans and drawings · from £1,150
- Annexe extensions · from £53,000
- Flat roof extensions · from £20,000
- Wraparound extensions · from £34,500
- Utility and boot room extensions · from £13,500
- Side extensions · from £21,000
- Orangery extensions · from £29,000
- Bedroom extensions · from £25,000
- Kitchen extensions · from £26,000
- Bungalow extensions · from £25,000
- Extensions over a garage · from £23,000
- Single-storey rear extensions · from £20,000
- Pitched roof extensions · from £21,500
- Double-storey extensions · from £36,500
- Home office extensions · from £15,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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 Stourbridge
How much does an extension cost in Stourbridge?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Stourbridge, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Stourbridge?
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.
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.
Book a free site visit in Stourbridge
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.