Double-storey extensions in Kenilworth

Planning your two-storey extension in Kenilworth

Planning permission from Warwick District Council is the first hurdle for most double-storey extensions in Kenilworth. Householder applications have an eight-week target for a decision, and Building Regulations approval and the Party Wall Act may also apply.

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

Postcode district: CV8
Planning and building control: Warwick District Council
From our West Bromwich base: 21 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.

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.

How much should you budget in Kenilworth?

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

Double-storey extensions in Kenilworth: common questions

Can we stay in the house while you build?

Most families do. The early stages are outside, and the existing house stays closed off until the shell is weathertight. The harder weeks are when openings are cut through on both floors, which brings dust and noise into bedrooms and the kitchen. We sheet off openings, lock up securely every night and agree in advance which rooms you'll lose and when.

How do I book a survey in Kenilworth?

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.

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.

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

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 Kenilworth

Other work we do in Kenilworth

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