Single-storey extensions in Willenhall

What should you know before starting in Willenhall?

Before work starts on your single-storey extension in Willenhall, two things get checked: whether planning permission from Walsall Council is needed, and how Building Regulations approval will be obtained. If you share a wall with a neighbour, the Party Wall etc. Act 1996 may apply as well.

Most of the build happens outside, so the kitchen is usually only out of action for one to three weeks near the end.
Detached houses get a little more room: 4 metres as standard, or up to 8 metres with prior approval.
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: WV12, WV13
Planning and building control: Walsall Council
From our West Bromwich base: 5 miles

Which options suit homes in Willenhall?

Flat roof or pitched roof

Flat roofs, usually GRP fibreglass or EPDM rubber, keep the height down near boundaries and suit roof lanterns. Pitched or lean-to roofs with tiles to match the house look more traditional and shed rain faster, but need more height. The choice affects permitted development limits, cost, and how much light reaches the existing rooms.

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.

What does your single-storey extension cost in Willenhall?

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

Your questions answered

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.

Do you cover Willenhall?

Yes. Willenhall (WV12, WV13) is about 5 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 Willenhall?

Usually building control, and sometimes planning. Walsall Council is the planning authority for Willenhall; 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 Willenhall

Other work we do in Willenhall

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