Double-storey extensions in Hagley

Double-storey extensions in Hagley: approvals and local details

Most two-storey extensions in Hagley need a planning application to Bromsgrove District 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.
Under permitted development, a rear extension of more than one storey can project no more than 3 metres and must be at least 7 metres from the rear boundary.
A side extension of more than one storey always needs a householder planning application.

Postcode district: DY9
Planning and building control: Bromsgrove District Council
From our West Bromwich base: 8 miles

Options to consider in Hagley

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.

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.

Double-storey extensions prices in Hagley

Expect to budget between £52,000 and £135,000 depending on size and specification in Hagley. A two-storey side extension on a three-bed semi, about 32 m² over two floors: typically £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. Your fixed price for the agreed specification follows a free survey at your Hagley address.

Double-storey extensions in Hagley: common questions

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.

Which postcodes in Hagley do you work in?

We cover DY9 and the streets around them. If you're on the edge of Hagley, neighbouring Stourbridge and Lye are covered too.

What will the council look at when deciding planning?

Councils judge two-storey extensions mainly on their effect on neighbours and the street. They look at loss of light and outlook next door, overlooking from upstairs windows, and whether the extension sits comfortably with the house, often expecting side extensions to be set back and lower than the main roof. Many councils publish householder design guides, and following yours closely improves the chance of approval.

Does Bromsgrove District Council need to approve my two-storey extension?

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

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