Broadstone, Dorset
Rear extension planning drawings in Broadstone
We plan and build rear extensions for homeowners in Broadstone. 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.
Broadstone and its postcode districts BH15, BH17 and BH18 are part of our Dorset coverage. Rear extension applications in Dorset 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 Broadstone?
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 Broadstone?
Here is how the rules in England apply to a rear extension in Broadstone.
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. 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 Broadstone like to extend?
Stone-built and rendered houses are common around Broadstone, 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 Broadstone comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Broadstone
Close by, we work in Canford Heath, about 1.2 miles away, and Wimborne Minster, about 1.9 miles away.
- Rear extension planning drawings in Canford Heath
- Rear extension planning drawings in Wimborne Minster
- Rear extension planning drawings in Poole
- Rear extension planning drawings in Ferndown
- Rear extension planning drawings in Bournemouth
Other work in Broadstone:
FAQ
Rear extension planning drawings questions in Broadstone
What postcode areas do you cover around Broadstone?
Including BH15, BH17 and BH18, and the surrounding Dorset area.
Can you match the brick or stone on my Broadstone house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Are the drawings mine?
You can use them to get other quotes, subject to the terms.
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.
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.
Do I need planning permission for a rear extension in Broadstone?
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.