Double-storey extensions in Warwick

Before your two-storey extension in Warwick

Most two-storey extensions in Warwick 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.

Scaffolding is usually up for most of the build, so think about access along the side of the house early.
New first-floor bedrooms normally need an escape window with at least 0.33 m² of clear openable area.
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.

Postcode district: CV34
Planning and building control: Warwick District Council
From our West Bromwich base: 24 miles

Which options suit homes in Warwick?

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.

What does your two-storey extension cost in Warwick?

Prices in Warwick 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. We confirm a fixed price for the agreed specification after visiting.

Questions about double-storey extensions in Warwick

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.

How do I book a survey in Warwick?

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.

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.

Who approves double-storey extensions in Warwick?

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.

Double-storey extensions near Warwick

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