Rear extension planning drawings in Royal Leamington Spa

What do rear extension planning drawings cost in Royal Leamington Spa?

As a guide, £1,000–£2,500 including VAT for a single-storey rear extension, or £2,000–£3,500 for a two-storey scheme. A householder planning application in England costs £548 (£575 for applications made from 8 December 2026), and a lawful development certificate for proposed work costs half the householder fee. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.

Do you need planning permission for a rear extension in Royal Leamington Spa?

Whether your rear extension in Royal Leamington Spa needs a planning application depends on its size, your house and any local restrictions.

England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.

Councils aim to decide householder applications within 8 weeks of validation, and prior approval within 42 days.

Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.

What are homes in Royal Leamington Spa like to extend?

Red-brick terraces and 1930s semis make up much of Royal Leamington Spa. Many already have a small kitchen lean-to at the back, which a new rear extension usually replaces rather than adds to.

How a rear extension in Royal Leamington Spa comes together

1. Free site visit

   We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.

2. Drawings and budget

   Floor plans and elevations for the options, each with a guide price.

3. Approvals

   Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.

4. Fixed price and build

   A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.

Rear extension planning drawings near Royal Leamington Spa

We also build rear extensions in nearby Warwick (2.7 miles) and Kenilworth (5.2 miles).

• Rear extension planning drawings in Warwick
• Rear extension planning drawings in Kenilworth
• Rear extension planning drawings in Coventry
• Rear extension planning drawings in Stratford-upon-Avon
• Rear extension planning drawings in Knowle

Other work in Royal Leamington Spa:

• Single-storey rear extension
• Two-storey rear extension
• Kitchen-diner rear extension
• Side return extension
• Wraparound extension
• Glazed rear extension

All rear extensions in Royal Leamington Spa