Double-storey extensions in Worcester

Before your two-storey extension in Worcester

Expect to apply to Worcester City Council for planning permission for a two-storey extension in Worcester; side extensions over one storey always need it. We prepare the drawings, and the structural work also needs Building Regulations approval.

The householder planning fee in England is £548 from April 2026, paid to Worcester City Council when you apply.
New first-floor bedrooms normally need an escape window with at least 0.33 m² of clear openable area.
Scaffolding is usually up for most of the build, so think about access along the side of the house early.

Postcode districts: WR1, WR2, WR3, WR4, WR5
Planning and building control: Worcester City Council
From our West Bromwich base: 24 miles

Which option fits your home?

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.

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.

Guide prices for Worcester

For a home in Worcester, 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. A free survey turns this guide into a fixed, itemised price.

Before you book in Worcester

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.

Which postcodes in Worcester do you work in?

We cover WR1, WR2, WR3, WR4, WR5 and the streets around them. If you're on the edge of Worcester, neighbouring Droitwich Spa and Malvern are covered too.

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.

Will I need permission from the council in Worcester?

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

Double-storey extensions near Worcester

Other work we do in Worcester

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