Highams Park, Greater London
Rear extension planning drawings in Highams Park
We plan and build rear extensions for homeowners in Highams Park. Measured survey, design options, planning drawings and the application, handled for you. Start with a free site visit, then a written price once the design is agreed.
Highams Park sits in Greater London, with postcode districts including E4, E17 and IG8. Rear extension applications in Greater London 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 Highams Park?
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 Highams Park?
Here is how the rules in England apply to a rear extension in Highams Park.
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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Highams Park like to extend?
Period terraces in Highams Park sit alongside flats, and the difference matters: houses usually keep permitted development rights, while flats and maisonettes need planning permission for any rear extension.
How a rear extension in Highams Park 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Highams Park
We also build rear extensions in nearby Woodford Green (1.3 miles) and Walthamstow (1.3 miles).
- Rear extension planning drawings in Woodford Green
- Rear extension planning drawings in Walthamstow
- Rear extension planning drawings in Chingford
- Rear extension planning drawings in Snaresbrook
- Rear extension planning drawings in Buckhurst Hill
Other work in Highams Park:
FAQ
Rear extension planning drawings questions in Highams Park
Is the site visit in Highams Park free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Highams Park?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Are the drawings mine?
You can use them to get other quotes, subject to the terms.
Can you match the brick or stone on my Highams Park 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 Highams Park?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need planning permission for a rear extension in Highams Park?
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.