Seven Sisters, Greater London
Rear extension planning drawings in Seven Sisters
For homes in Seven Sisters, 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.
Seven Sisters is covered from our Greater London round, including N4, N15 and N16. Planning applications in Seven Sisters go to the local planning authority covering Seven Sisters, 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 Seven Sisters?
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 Seven Sisters?
Here is how the rules in England apply to a rear extension in Seven Sisters.
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 Seven Sisters like to extend?
Period terraces in Seven Sisters sit alongside flats, and the difference matters: houses usually keep permitted development rights, while flats and maisonettes need planning permission for any rear extension. For Seven Sisters homes we start with a measured survey, then draw options before anything is submitted.
How a rear extension in Seven Sisters 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Seven Sisters
Neighbouring places we cover include St Ann's (0.6 miles) and Stamford Hill (0.7 miles).
- Rear extension planning drawings in St Ann's
- Rear extension planning drawings in Stamford Hill
- Rear extension planning drawings in Harringay
- Rear extension planning drawings in Stroud Green
- Rear extension planning drawings in Tottenham Hale
Other work in Seven Sisters:
FAQ
Rear extension planning drawings questions in Seven Sisters
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Can you match the brick or stone on my Seven Sisters house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Do I need planning permission for a rear extension in Seven Sisters?
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.
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.