Single-storey extensions in West Bromwich

Before your single-storey extension in West Bromwich

Planning applications and lawful development certificates for West Bromwich go to Sandwell 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.

Every extension needs Building Regulations approval, even when planning permission isn't required.
Foundations within 3 metres of a neighbour's house that go deeper than theirs need party wall notice at least a month in advance.
Most of the build happens outside, so the kitchen is usually only out of action for one to three weeks near the end.

Postcode districts: B70, B71
Planning and building control: Sandwell Council
From our West Bromwich base: Our home town

Options to consider in West Bromwich

Utility, WC or boot-room extension

A smaller extension of 6–12 m² can take the washing machine, coats and a downstairs toilet out of the kitchen. Adding a WC means a new waste connection, so the position of the existing drains often decides the layout. It's a cost-effective way to free up the main rooms without a large build.

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.

Guide prices for West Bromwich

Expect to budget between £28,000 and £90,000 depending on size and specification in West Bromwich. 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. A free survey turns this guide into a fixed, itemised price.

Before you book in West Bromwich

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.

Do you cover West Bromwich?

Yes. Our registered office is in West Bromwich (B70, B71), so it's our home patch. Call 0800 088 6248 or send the form on this page to book a free survey.

Do I need to tell my neighbours about an extension?

You don't need their permission for permitted development, but you will usually need to involve them. Under the prior approval route the council writes to adjoining neighbours and gives them 21 days to comment. If the build is on the boundary or the foundations are deep and close to their house, the Party Wall Act requires formal written notice. A friendly conversation before any notice arrives usually makes everything smoother.

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

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

Nearby places we cover

Other work we do in West Bromwich

Book a free survey in West Bromwich and we'll measure up, check the drains and boundaries, and give you a written, itemised quote.