Chesterfield, Derbyshire
Rear extension planning drawings in Chesterfield
Thinking about a rear extension in Chesterfield? Measured survey, design options, planning drawings and the application, handled for you. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Chesterfield sits in Derbyshire, with postcode districts including S40 and S41. Planning applications in Chesterfield go to the local planning authority covering Chesterfield, 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 Chesterfield?
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 Chesterfield?
Here is how the rules in England apply to a rear extension in Chesterfield.
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 Chesterfield like to extend?
Red-brick terraces and semis are typical of Chesterfield. 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 Chesterfield 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.
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.
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 Chesterfield
Close by, we work in Staveley, about 3.0 miles away, and Dronfield, about 4.3 miles away.
- Rear extension planning drawings in Staveley
- Rear extension planning drawings in Dronfield
- Rear extension planning drawings in Bolsover
- Rear extension planning drawings in Beighton
- Rear extension planning drawings in Nether Edge
Other work in Chesterfield:
FAQ
Rear extension planning drawings questions in Chesterfield
Can you match the brick or stone on my Chesterfield house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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 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 Chesterfield?
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.
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.
What postcode areas do you cover around Chesterfield?
Including S40 and S41, and the surrounding Derbyshire area.