Double-storey extensions in Wombourne

Double-storey extensions in Wombourne: approvals and local details

Most two-storey extensions in Wombourne need a planning application to South Staffordshire Council. A two-storey rear extension can sometimes be permitted development, but only if it is no more than 3 m deep and at least 7 m from the rear boundary, among other conditions. Building Regulations approval is needed either way.

Party wall notices take one or two months to run, so they're best served as soon as planning is granted.
Scaffolding is usually up for most of the build, so think about access along the side of the house early.
An upstairs en-suite is simplest when the new bathroom sits close to the existing soil stack.

Postcode district: WV5
Planning and building control: South Staffordshire Council
From our West Bromwich base: 8 miles

Options to consider in Wombourne

Building over an existing extension

Adds a first floor on top of an existing single-storey extension or attached garage. It can cost less because the footprint already exists, but a structural engineer must check the existing foundations and walls first, and they sometimes need strengthening. The old flat roof comes off and the new floor is tied into the main house.

Two-storey side extension

Built over the side of the house, often where a driveway or old garage sits. It can create a garage, utility or study downstairs with a double bedroom above. Councils often expect the upper floor to be set back from the front and the roof to sit lower than the main ridge, so the design needs care to win approval.

Guide prices for Wombourne

Guide prices start at £52,000 and run to £135,000 depending on size and specification. A two-storey side extension on a three-bed semi, about 32 m² over two floors: around £68,000–£88,000.

Guide prices for double-storey extensions
Option	Guide price	Good to know
Compact two-storey rear (20–28 m² total)	£52,000 – £72,000	Bigger kitchen below, bedroom or bathroom above
Two-storey side or rear (30–40 m² total)	£68,000 – £98,000	The usual size on a three-bed semi
Large or combined side and rear (45 m²+)	£95,000 – £135,000	More steel, a complex roof and a longer programme

Guide ranges include VAT where it applies. We confirm a fixed price for the agreed specification after visiting.

Before you book in Wombourne

What paperwork will I have at the end?

You'll get the building control completion certificate, the electrical installation certificate, your planning decision notice and the manufacturers' guarantee documents for windows, doors and roof products, with their terms set out in your quote. Keep these together, as a buyer's solicitor will ask for them when you sell. Ask us for current insurance details with your quote.

Do you cover Wombourne?

Yes. Wombourne (WV5) 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.

How long does a double-storey extension take?

Plan on 14–22 weeks on site, depending on size and roof complexity. Before that, allow time for drawings, a planning decision (councils aim to decide householder applications within 8 weeks), Building Regulations drawings and party wall notices. It's worth starting the design well ahead of when you need the space, because the approvals stage can take as long as the build.

Who approves double-storey extensions in Wombourne?

Usually both. Most two-storey extensions need a planning application to South Staffordshire Council, and the structural work needs Building Regulations approval from its building control team or a registered building control approver.

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More services in Wombourne

Want a guide figure first? Use our quote tool for your Wombourne extension, then book a survey for a fixed price for the agreed specification.