Single-storey extensions in Shirley

What should you know before starting in Shirley?

In Shirley, Solihull Council decides planning questions. We check permitted development limits and any local restrictions at the survey, then deal with the Building Regulations side so you receive a completion certificate when the work is signed off.

Under permitted development, a rear extension on a semi or terrace can usually project 3 metres from the original back wall, or 6 metres through the prior approval route.
If you're building over or near a public sewer, the sewerage company has to agree before the foundations go in.
Detached houses get a little more room: 4 metres as standard, or up to 8 metres with prior approval.

Postcode district: B90
Planning and building control: Solihull Council
From our West Bromwich base: 10 miles

Choices to weigh up in Shirley

Wrap-around extension

Combines a side and rear extension into an L shape, giving the largest ground-floor gain. Because it extends both sideways and rearwards, a wrap-around normally needs a householder planning application rather than relying on permitted development. Expect more steelwork and a more involved roof where the two sections meet.

Side or side-return extension

Uses the strip of land beside the house, often a passage or driveway. Under permitted development a side extension can be up to half the width of the original house and no more than 4 metres high. On a terrace with a narrow side return, it can widen a galley kitchen considerably without eating into the garden.

Single-storey extensions prices in Shirley

Expect to budget between £28,000 and £90,000 depending on size and specification in Shirley. A 4 m × 5 m rear extension on a semi, with roof lights and bifold doors: typically £40,000–£52,000.

Guide prices for single-storey extensions
Option	Guide price	Good to know
Small rear or side extension (10–15 m²)	£28,000 – £40,000	Utility, WC or a modest kitchen extension
Rear kitchen-diner extension (18–25 m²)	£38,000 – £58,000	The glazing spec moves it within the range
Wrap-around or large extension (30 m²+)	£58,000 – £90,000	More steel and roof, and normally a planning application

Guide ranges include VAT where it applies. Your fixed price for the agreed specification follows a free survey at your Shirley address.

Single-storey extensions in Shirley: common questions

Can we live at home during the build?

Yes, most families stay at home throughout. For the first several weeks the work is outside and your house is closed off from it. The disruptive part is the break-through, when the back wall comes out and the kitchen may be out of action for one to three weeks. We agree a plan for a temporary sink and cooking space before that stage starts.

Which postcodes in Shirley do you work in?

We cover B90 and the streets around them. If you're on the edge of Shirley, neighbouring Hall Green and Olton are covered too.

How much does a single-storey extension cost in the West Midlands?

Most single-storey extensions in the West Midlands cost between £28,000 and £90,000, including VAT where it applies. A typical 4 m × 5 m rear kitchen-diner on a semi, with roof lights and bifold doors, usually costs £40,000–£52,000 built to a finish ready for decorating. Kitchen units, flooring and decorating are extra. After the free survey you get a fixed price for the agreed specification.

Does Solihull Council need to approve my single-storey extension?

Usually building control, and sometimes planning. Solihull Council is the planning authority for Shirley; Building Regulations approval comes from its building control team or a registered building control approver. We'll tell you which applies after the survey.

Also covering nearby

More services in Shirley

Call 0800 088 6248 to talk through your extension, or send us a few details and we'll arrange a visit.