Single-storey extensions in Longbridge

Single-storey extensions in Longbridge: approvals and local details

Planning applications and lawful development certificates for Longbridge go to Birmingham City Council. Many single-storey extensions fall under permitted development, but not every house keeps those rights — conditions on newer estates, conservation areas and Article 4 directions can remove them. The structural work also needs Building Regulations approval, through the council's building control team or a registered building control approver.

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.
A lawful development certificate from Birmingham City Council confirms in writing that a permitted development extension is lawful, which helps when you sell.
Foundations within 3 metres of a neighbour's house that go deeper than theirs need party wall notice at least a month in advance.

Postcode districts: B31, B38
Planning and building control: Birmingham City Council
From our West Bromwich base: 8 miles

Which option fits your home?

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.

Guide prices for Longbridge

Expect to budget between £28,000 and £90,000 depending on size and specification in Longbridge. 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 Longbridge address.

Single-storey extensions in Longbridge: 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.

Do you cover Longbridge?

Yes. Longbridge (B31, B38) is about 8 miles from our West Bromwich base and inside the area we cover. Call 0800 088 6248 or send the form on this page to book a free survey.

What should I prepare before the survey?

Think about how you want to use the new space, and gather anything you have about the house: old plans, deeds showing boundaries, approvals for any earlier extension, and where you think the drains run. Photos of extensions you like help us price glazing and finishes accurately. If you're in a conservation area or on a newer estate, mention it, as it can affect permitted development.

Will I need permission from the council in Longbridge?

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

Single-storey extensions near Longbridge

Other home improvements in Longbridge

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