Mangotsfield, Bristol and South Gloucestershire
Rear extension planning drawings in Mangotsfield
For homes in Mangotsfield, 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.
Mangotsfield sits in Bristol and South Gloucestershire, with postcode districts including BS15, BS16 and BS36. For Mangotsfield homes we start with a measured survey, then draw options before anything is submitted.
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 Mangotsfield?
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 Mangotsfield?
Here is how the rules in England apply to a rear extension in Mangotsfield.
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 Mangotsfield like to extend?
Stone-built and rendered houses are common around Mangotsfield, so matching the walling is a design decision in its own right: natural stone, reconstituted stone or a render finish across old and new.
How a rear extension in Mangotsfield 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Mangotsfield
Close by, we work in Kingswood, about 2.4 miles away, and Stoke Gifford, about 2.5 miles away.
- Rear extension planning drawings in Kingswood
- Rear extension planning drawings in Stoke Gifford
- Rear extension planning drawings in Bristol
- Rear extension planning drawings in Keynsham
- Rear extension planning drawings in Yate
Other work in Mangotsfield:
FAQ
Rear extension planning drawings questions in Mangotsfield
Do I need planning permission for a rear extension in Mangotsfield?
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 you match the brick or stone on my Mangotsfield house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What if planning is refused?
We review the reasons with you, amend and resubmit (often free of a second fee within 12 months in England) or appeal.
Is the site visit in Mangotsfield free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Mangotsfield?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.