Extra bedroom and en-suite extensions in Stourbridge
We plan and build extra bedroom and en-suite extensions for homeowners in Stourbridge and nearby. Every project starts with a free visit and a design stage priced in writing before any work begins.
Before you start in Stourbridge, here's what applies.
- Postcode districts
- DY8 and DY9
- County / area
- West Midlands, England
- Price region
- West Midlands
- Guide price
- £56,000–£75,500 (£2,000–£2,700 per m²), plus £5,500–£11,000 for the en-suite
- Approval route
- It may be permitted development if it goes no more than 3 m beyond the original rear wall (counting any single-storey part) and stays 7 m from the rear boundary; otherwise it needs planning permission.
- Nearest towns
- Brierley Hill (2 miles), Kingswinford (3.1 miles), Dudley (3.9 miles)
- Distance to Birmingham
- about 10.4 miles
- First visit
- Free, no obligation
About an extra bedroom and en-suite extension
This service suits you if you need another bedroom, or want a main bedroom with its own bathroom, without converting the loft or moving. You get a first-floor layout that connects well to your landing, an en-suite designed for plumbing and ventilation, a useful room downstairs, the approvals your nation needs and the build, managed by us and carried out by vetted teams working under S&K.
We cover Stourbridge (DY8 and DY9) and the places around it, including Brierley Hill (2.0 miles), Kingswinford (3.1 miles) and Dudley.
What it costs in Stourbridge
Guide prices for extra bedroom and en-suite extensions in the West Midlands are around £2,000–£2,700 per m² of new floor space, including VAT. For a typical project with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space), that's roughly £56,000–£75,500 (plus £5,500–£11,000 for the en-suite). Design fees, structural calculations and approval fees are separate and listed on our prices page.
| Spec | Per m² | A 4 m × 3.5 m footprint on two floors (28 m² of new floor space) |
|---|---|---|
| Essential | £1,840–£2,480 per m² | £51,500–£69,500 |
| Standard | £2,000–£2,700 per m² | £56,000–£75,500 |
| Premium | £2,400–£3,240 per m² | £67,000–£90,500 |
Planning and building regulations in Stourbridge
In England, an extra bedroom extension at the rear can be permitted development if it goes no more than 3 m beyond the original rear wall and stays 7 m from the rear boundary. Upper side windows, including en-suite windows, must be obscure-glazed and non-opening below 1.7 m. Side or deeper designs need planning permission, costing £548 (or £575 for applications made from 8 December 2026).
Approval in England: Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
Building regulations: Building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end.
Design points for Stourbridge homes
Planning the en-suite
An en-suite needs a route for the soil pipe to the drains, enough fall for waste water and an extract fan to the outside under Part F. Placing it over the ground-floor utility or near an existing drain keeps pipework short and hidden.
Connecting to the landing
The new bedroom must be reached from the existing landing, usually through a new opening in the outside wall or by taking part of an existing bedroom as a corridor. We look at the stairs and landing first, because a poor connection can waste much of the new space.
How we'd run your project
Start at your house
We come to your home in Stourbridge, measure up, check the ground floor walls and roof structure, and note anything near the boundaries.
Get it approved
Once you're happy with the design we submit it to the council for Stourbridge and deal with any questions from the planning officer.
Price it properly
Once the engineer's calculations are in, we fix the build price in writing, with a clear list of what's included.
On site
One project lead runs the job, keeps you updated and arranges inspections at each stage until completion.
Questions about extra bedroom and en-suite extensions in Stourbridge
Who handles building regulations for a project in Stourbridge?
We handle it as part of the project. What's needed in England: building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end. We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.
How much does an extra bedroom and en-suite extension cost in Stourbridge?
Our guide for the West Midlands, which covers Stourbridge, is £2,000–£2,700 per m² including VAT. A typical project with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) comes to about £56,000–£75,500 (plus £5,500–£11,000 for the en-suite). Design and approval fees are extra, and we fix the build price in writing once the design is agreed.
Do I need planning permission for an extra bedroom and en-suite extension in Stourbridge?
Stourbridge is in England, so England planning rules apply. It may be permitted development if it goes no more than 3 m beyond the original rear wall (counting any single-storey part) and stays 7 m from the rear boundary; otherwise it needs planning permission. If in doubt, a lawful development certificate or a planning application gives you certainty before you build.
Does an extra bedroom add value to my house?
It usually does, though not always by the full cost. Nationwide's 2025 research found that adding a double bedroom to a two-bed house was linked to about 13% higher value, and a double bedroom and bathroom on a three-bed, one-bathroom house up to 24%. Local ceiling prices still apply.
Can an en-suite go in a room with no window?
Yes. A shower room without a window is allowed, provided it has a mechanical extract fan to the outside that meets Part F. Many people prefer a window for daylight, but if it faces a neighbour it will usually need obscure glass. We plan the extract route early so the duct is hidden.
Nearby
Nearby towns we cover for extra bedroom and en-suite extensions:
Other extensions in Stourbridge
All two-storey extension services in Stourbridge · Extra bedroom and en-suite extensions across the West Midlands
Tell us about your house in Stourbridge and we'll call you back to arrange a free, no-obligation visit.