Altrincham, Greater Manchester
Rear extension planning drawings in Altrincham
We plan and build rear extensions for homeowners in Altrincham. 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.
Altrincham and its postcode districts M33, WA14 and WA15 are part of our Greater Manchester coverage. Planning applications in Altrincham go to the local planning authority covering Altrincham, 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 Altrincham?
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 Altrincham?
Planning for a rear extension in Altrincham follows the English householder rules.
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 Altrincham like to extend?
Stone and brick terraces are common around Altrincham. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.
How a rear extension in Altrincham 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.
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.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Rear extension planning drawings near Altrincham
Close by, we work in Hale, about 0.9 miles away, and Timperley, about 1.1 miles away.
- Rear extension planning drawings in Hale
- Rear extension planning drawings in Timperley
- Rear extension planning drawings in Sale
- Rear extension planning drawings in Urmston
- Rear extension planning drawings in Stretford
Other work in Altrincham:
FAQ
Rear extension planning drawings questions in Altrincham
Can you match the brick or stone on my Altrincham house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is the site visit in Altrincham free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do I need an architect?
You need accurate drawings by someone who knows householder planning; we provide them.
Do I need planning permission for a rear extension in Altrincham?
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 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.
Do you handle building control in Altrincham?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.