Rear extension planning drawings in Whitstable

What do rear extension planning drawings cost in Whitstable?

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 Whitstable?

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

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 Whitstable like to extend?

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

How a rear extension in Whitstable 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 Whitstable

From Whitstable, the nearest places we also cover are Herne Bay (4.5 miles) and Canterbury (6.1 miles).

• Rear extension planning drawings in Herne Bay
• Rear extension planning drawings in Canterbury
• Rear extension planning drawings in Faversham
• Rear extension planning drawings in Sheerness
• Rear extension planning drawings in Sittingbourne

Other work in Whitstable:

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

All rear extensions in Whitstable