Dorking, Surrey
Rear extension planning drawings in Dorking
Measured survey, design options, planning drawings and the application, handled for you. We design, get the approvals for and build rear extensions in Dorking and the surrounding area, with one contract from the first survey to building control sign-off.
Dorking is covered from our Surrey round, including KT23 and RH4. Rear extension applications in Surrey are householder applications, which councils aim to decide within about eight weeks.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
What do rear extension planning drawings cost in Dorking?
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 Dorking?
Planning for a rear extension in Dorking 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 Dorking like to extend?
Commuter semis and detached houses make up much of Dorking, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a rear extension in Dorking comes together
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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Dorking
Neighbouring places we cover include Great Bookham (3.7 miles) and Leatherhead (4.4 miles).
- Rear extension planning drawings in Great Bookham
- Rear extension planning drawings in Leatherhead
- Rear extension planning drawings in Ashtead
- Rear extension planning drawings in Reigate
- Rear extension planning drawings in Redhill
Other work in Dorking:
FAQ
Rear extension planning drawings questions in Dorking
Can you match the brick or stone on my Dorking house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How long does a rear extension take to build in Dorking?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
What postcode areas do you cover around Dorking?
Including KT23 and RH4, and the surrounding Surrey area.
What do rear extension planning drawings cost in Dorking?
As a guide, £1,000–£2,500 including VAT for a single-storey rear extension and £2,000–£3,500 for a two-storey scheme, covering the measured survey, design options and the application. The council fee is extra.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.