Double-storey extensions in Leamington Spa

What should you know before starting in Leamington Spa?

Most two-storey extensions in Leamington Spa need a planning application to Warwick 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.

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.
An upstairs en-suite is simplest when the new bathroom sits close to the existing soil stack.

Postcode district: CV32
Planning and building control: Warwick District Council
From our West Bromwich base: 25 miles

Which options suit homes in Leamington Spa?

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.

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.

Guide prices for Leamington Spa

Expect to budget between £52,000 and £135,000 depending on size and specification in Leamington Spa. 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 Leamington Spa address.

Questions about double-storey extensions in Leamington Spa

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 Leamington Spa do you work in?

We cover CV32 and the streets around them. If you're on the edge of Leamington Spa, neighbouring Warwick and Kenilworth are covered too.

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.

Will I need permission from the council in Leamington Spa?

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

Nearby places we cover

Other home improvements in Leamington Spa

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