Sinfin, Derbyshire
Rear extension planning drawings in Sinfin
We plan and build rear extensions for homeowners in Sinfin. 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.
We cover Sinfin (DE1, DE23 and DE24) as part of our Derbyshire work. For Sinfin 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 Sinfin?
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 Sinfin?
The planning route for a rear extension in Sinfin is set by England's householder rules and your council.
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 Sinfin like to extend?
Red-brick terraces and semis are typical of Sinfin. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.
How a rear extension in Sinfin 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.
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.
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 Sinfin
We also build rear extensions in nearby Derby (2.9 miles) and Chaddesden (4.0 miles).
- Rear extension planning drawings in Derby
- Rear extension planning drawings in Chaddesden
- Rear extension planning drawings in Oakwood
- Rear extension planning drawings in Swadlincote
- Rear extension planning drawings in Burton upon Trent
Other work in Sinfin:
FAQ
Rear extension planning drawings questions in Sinfin
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.
Are the drawings mine?
You can use them to get other quotes, subject to the terms.
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.
Do you handle building control in Sinfin?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Can you match the brick or stone on my Sinfin house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.