Double-storey extensions in Wednesbury

Before your two-storey extension in Wednesbury

Most two-storey extensions in Wednesbury need a planning application to Sandwell 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.

Scaffolding is usually up for most of the build, so think about access along the side of the house early.
Councils often expect a side extension's first floor to be set back from the front wall, with its roof below the main ridge.
Party wall notices take one or two months to run, so they're best served as soon as planning is granted.

Postcode district: WS10
Planning and building control: Sandwell Council
From our West Bromwich base: 3 miles

Choices to weigh up in Wednesbury

Mixed-height extension

A two-storey section at the side with a single-storey section running across the back. This keeps the first floor away from neighbours' windows while still giving a wide kitchen-diner below. It's a practical compromise where planners have concerns about a full-depth two-storey rear extension, and it often simplifies the roof.

Combined side and rear

An L-shaped two-storey build wrapping the side and back of the house gives the biggest gain, sometimes two extra bedrooms. It's a substantial project with more steel and a complex roof junction, and it will need a householder planning application. Expect a longer programme and a careful plan for keeping the house secure while the roofs are joined.

What does your two-storey extension cost in Wednesbury?

For a home in Wednesbury, our guide range is £52,000–£135,000 depending on size and specification. A two-storey side extension on a three-bed semi, about 32 m² over two floors: usually £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. Access, parking and the state of what's there now can move the price — the survey settles it.

Double-storey extensions in Wednesbury: common questions

Is a double-storey extension better value than a single-storey one?

Per square metre, usually yes. Foundations and roofs are the expensive parts of any extension, and on a two-storey build they serve twice the floor area. You'll pay more in total and planning is less certain, but if you need a bedroom as well as downstairs space, building both together normally costs less than two separate projects years apart.

Which postcodes in Wednesbury do you work in?

We cover WS10 and the streets around them. If you're on the edge of Wednesbury, neighbouring Darlaston and Great Bridge are covered too.

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.

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

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

Double-storey extensions near Wednesbury

Other home improvements in Wednesbury

Ask for a free survey in Wednesbury and we'll tell you what's likely to get planning before you pay for drawings.