Rear extension planning drawings in Walton-on-Thames

What do rear extension planning drawings cost in Walton-on-Thames?

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 Walton-on-Thames?

Planning for a rear extension in Walton-on-Thames follows the English householder rules.

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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.

What are homes in Walton-on-Thames like to extend?

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

How a rear extension in Walton-on-Thames 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. Planning and regulations

   We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.

4. Written price, then build

   Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.

Rear extension planning drawings near Walton-on-Thames

Neighbouring places we cover include Sunbury-on-Thames (1.2 miles) and Shepperton (1.7 miles).

• Rear extension planning drawings in Sunbury-on-Thames
• Rear extension planning drawings in Shepperton
• Rear extension planning drawings in West Molesey
• Rear extension planning drawings in Weybridge
• Rear extension planning drawings in Esher

Other work in Walton-on-Thames:

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

All rear extensions in Walton-on-Thames