Rear extension planning drawings in Addlestone

What do rear extension planning drawings cost in Addlestone?

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. We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.

Do you need planning permission for a rear extension in Addlestone?

The planning route for a rear extension in Addlestone is set by England's householder rules and your council.

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 Addlestone like to extend?

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

How a rear extension in Addlestone comes together

1. Look round and measure

   A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.

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 Addlestone

We also build rear extensions in nearby Chertsey (1.3 miles) and Weybridge (1.5 miles).

• Rear extension planning drawings in Chertsey
• Rear extension planning drawings in Weybridge
• Rear extension planning drawings in Shepperton
• Rear extension planning drawings in Walton-on-Thames
• Rear extension planning drawings in Sunbury-on-Thames

Other work in Addlestone:

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

All rear extensions in Addlestone