Bishops Stortford, Hertfordshire
Rear extension planning drawings in Bishops Stortford
Rear extension planning drawings in Bishops Stortford: measured survey, design options, planning drawings and the application, handled for you. We measure the house, show you what the rules allow, price it in writing and build it.
Bishops Stortford sits in Hertfordshire, with postcode districts including CM23. Rear extension applications in Hertfordshire 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 Bishops Stortford?
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 Bishops Stortford?
The planning route for a rear extension in Bishops Stortford 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. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Bishops Stortford like to extend?
Bishops Stortford mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a rear extension in Bishops Stortford 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Bishops Stortford
Neighbouring places we cover include Harlow (6.8 miles) and Ware (9.0 miles).
- Rear extension planning drawings in Harlow
- Rear extension planning drawings in Ware
- Rear extension planning drawings in Hoddesdon
- Rear extension planning drawings in Saffron Walden
- Rear extension planning drawings in Hertford
Other work in Bishops Stortford:
FAQ
Rear extension planning drawings questions in Bishops Stortford
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.
What do rear extension planning drawings cost in Bishops Stortford?
As a guide, £1,000–£2,500 including VAT for a single-storey rear extension and £2,000–£3,500 for a two-storey scheme, covering the measured survey, design options and the application. The council fee is extra.
Can I see the design in 3D?
Yes; we produce simple 3D views so you can judge the size and light.
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 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 you handle building control in Bishops Stortford?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.