Double-storey extensions in Warwickshire

Double-storey extensions in Warwickshire: approvals and local details

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

Party wall notices take one or two months to run, so they're best served as soon as planning is granted.
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.
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 Warwickshire postcodes
Planning and building control: Your district council
From our West Bromwich base: About 18 miles to the centre

Which options suit homes in Warwickshire?

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.

Double-storey extensions prices in Warwickshire

Prices in Warwickshire match the rest of our area: £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. Your fixed price for the agreed specification follows a free survey at your Warwickshire address.

Before you book in Warwickshire

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.

How do I book a survey in Warwickshire?

Send the form on this page, use the guide-price tool or call 0800 088 6248 free. We'll ask a few questions about your two-storey extension and arrange a time to visit.

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.

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 Warwickshire

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Let's talk about the space you need; a written, itemised quote for your Warwickshire home costs nothing and commits you to nothing.