Double-storey extensions in Staffordshire

What should you know before starting in Staffordshire?

Expect to apply to the district or borough council for your town for planning permission for a two-storey extension in Staffordshire; side extensions over one storey always need it. We prepare the drawings, and the structural work also needs Building Regulations approval.

A side extension of more than one storey always needs a householder planning application.
New first-floor bedrooms normally need an escape window with at least 0.33 m² of clear openable area.
Councils often expect a side extension's first floor to be set back from the front wall, with its roof below the main ridge.

Postcode district: All Staffordshire postcodes
Planning and building control: Your district council
From our West Bromwich base: About 11 miles to the centre

Options to consider in Staffordshire

Two-storey rear extension

Adds depth to both floors across the back of the house: a kitchen-diner below and a larger bedroom or new bathroom above. Permitted development only covers projections up to 3 metres and at least 7 metres from the rear boundary, so many rear builds still need planning. Overlooking and loss of light to neighbours are the usual tests.

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.

Guide prices for Staffordshire

For a home in Staffordshire, 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. We confirm a fixed price for the agreed specification after visiting.

Before you book in Staffordshire

How much does a double-storey extension cost?

In the West Midlands, most double-storey extensions cost between £52,000 and £135,000, including VAT where it applies. A typical side extension on a three-bed semi, around 32 m² across both floors, usually costs £68,000–£88,000 built to a plastered finish. Kitchen units, a bathroom suite, flooring and decorating are priced separately, so you can choose them to suit your budget.

Do you cover the whole of Staffordshire?

Yes — we cover Staffordshire from our West Bromwich base, including Walsall, Sandwell and Wolverhampton. Call 0800 088 6248 or send the form on this page to book a free survey.

Can we stay in the house while you build?

Most families do. The early stages are outside, and the existing house stays closed off until the shell is weathertight. The harder weeks are when openings are cut through on both floors, which brings dust and noise into bedrooms and the kitchen. We sheet off openings, lock up securely every night and agree in advance which rooms you'll lose and when.

Does the council need to approve my two-storey extension?

Usually both. Most two-storey extensions need a planning application to the district or borough council for your town, and the structural work needs Building Regulations approval from its building control team or a registered building control approver.

Double-storey extensions across Staffordshire

We cover every town and district below:

Close to Staffordshire

Other home improvements in Staffordshire

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