Belvedere, Greater London
Rear extension planning drawings in Belvedere
For homes in Belvedere, a rear extension is often the simplest way to gain space without moving. Measured survey, design options, planning drawings and the application, handled for you. We take it from survey to completion certificate.
Belvedere sits in Greater London, with postcode districts including DA17, DA18 and SE2. Planning applications in Belvedere go to the local planning authority covering Belvedere, and we check its local design guidance for rear extensions before drawing.
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 Belvedere?
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 Belvedere?
Planning for a rear extension in Belvedere 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 Belvedere like to extend?
Belvedere is mostly 1930s semis, short terraces and post-war houses, so full-width single-storey and two-storey rear extensions are realistic on many plots. Some later estates had permitted development rights removed by condition, so we check the planning history first.
How a rear extension in Belvedere comes together
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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
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 Belvedere
Close by, we work in Thamesmead, about 1.6 miles away, and Abbey Wood, about 1.9 miles away.
- Rear extension planning drawings in Thamesmead
- Rear extension planning drawings in Abbey Wood
- Rear extension planning drawings in Rainham
- Rear extension planning drawings in Welling
- Rear extension planning drawings in Plumstead
Other work in Belvedere:
FAQ
Rear extension planning drawings questions in Belvedere
What postcode areas do you cover around Belvedere?
Including DA17, DA18 and SE2, and the surrounding Greater London area.
Do you handle building control in Belvedere?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do neighbours get consulted?
Yes for a full application: the council writes to them or puts up a site notice.
Do I need planning permission for a rear extension in Belvedere?
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.
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.
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.