Herne Bay, Kent
Rear extension planning drawings in Herne Bay
Measured survey, design options, planning drawings and the application, handled for you. If you live in Herne Bay and want to know what a rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Herne Bay and its postcode districts CT6 are part of our Kent coverage. Rear extension applications in Kent 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 Herne Bay?
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. These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a rear extension in Herne Bay?
Whether your rear extension in Herne Bay needs a planning application depends on its size, your house and any local restrictions.
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 Herne Bay like to extend?
Commuter semis and detached houses make up much of Herne Bay, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a rear extension in Herne Bay 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.
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 Herne Bay
From Herne Bay, the nearest places we also cover are Whitstable (4.5 miles) and Canterbury (6.8 miles).
- Rear extension planning drawings in Whitstable
- Rear extension planning drawings in Canterbury
- Rear extension planning drawings in Faversham
- Rear extension planning drawings in Margate
- Rear extension planning drawings in Ramsgate
Other work in Herne Bay:
FAQ
Rear extension planning drawings questions in Herne Bay
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Can you match the brick or stone on my Herne Bay 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.
What postcode areas do you cover around Herne Bay?
Including CT6, and the surrounding Kent area.
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 Herne Bay?
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.