Rear extension planning drawings in Epsom

What do rear extension planning drawings cost in Epsom?

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 Epsom?

Here is how the rules in England apply to a rear extension in Epsom.

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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.

What are homes in Epsom like to extend?

Commuter semis and detached houses make up much of Epsom, and longer gardens make England's prior approval route for deeper rear extensions worth considering.

How a rear extension in Epsom 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 Epsom

We also build rear extensions in nearby Ewell (1.6 miles) and Ashtead (2.0 miles).

• Rear extension planning drawings in Ewell
• Rear extension planning drawings in Ashtead
• Rear extension planning drawings in Chessington
• Rear extension planning drawings in Banstead
• Rear extension planning drawings in Hook

Other work in Epsom:

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

All rear extensions in Epsom