Burgess Hill, West Sussex
Rear extension planning drawings in Burgess Hill
Measured survey, design options, planning drawings and the application, handled for you. If you live in Burgess Hill and want to know what a rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Burgess Hill is covered from our West Sussex round, including RH15. Rear extension applications in West Sussex 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 Burgess Hill?
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 Burgess Hill?
The planning route for a rear extension in Burgess Hill is set by England's householder rules and your council.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
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. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Burgess Hill like to extend?
Commuter semis and detached houses make up much of Burgess Hill, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a rear extension in Burgess Hill comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Burgess Hill
From Burgess Hill, the nearest places we also cover are Hurstpierpoint (2.7 miles) and Lewes (8.5 miles).
- Rear extension planning drawings in Hurstpierpoint
- Rear extension planning drawings in Lewes
- Rear extension planning drawings in Portslade
- Rear extension planning drawings in Hove
- Rear extension planning drawings in Brighton
Other work in Burgess Hill:
FAQ
Rear extension planning drawings questions in Burgess Hill
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.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Do I need an architect?
You need accurate drawings by someone who knows householder planning; we provide them.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Do you handle building control in Burgess Hill?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do I need planning permission for a rear extension in Burgess Hill?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.