Royal Tunbridge Wells, Kent
Rear extension planning drawings in Royal Tunbridge Wells
For homes in Royal Tunbridge Wells, a rear extension is often the simplest way to gain space without moving. Measured survey, design options, planning drawings and the application, handled for you. We take it from survey to completion certificate.
We cover Royal Tunbridge Wells (TN1, TN2, TN3 and TN4) as part of our Kent work. 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 Royal Tunbridge Wells?
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 Royal Tunbridge Wells?
Planning for a rear extension in Royal Tunbridge Wells follows the English householder rules.
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. 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 Royal Tunbridge Wells like to extend?
Commuter semis and detached houses make up much of Royal Tunbridge Wells, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a rear extension in Royal Tunbridge Wells comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
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.
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 Royal Tunbridge Wells
From Royal Tunbridge Wells, the nearest places we also cover are Tonbridge (4.3 miles) and Crowborough (6.6 miles).
- Rear extension planning drawings in Tonbridge
- Rear extension planning drawings in Crowborough
- Rear extension planning drawings in Sevenoaks
- Rear extension planning drawings in East Grinstead
- Rear extension planning drawings in Uckfield
Other work in Royal Tunbridge Wells:
FAQ
Rear extension planning drawings questions in Royal Tunbridge Wells
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.
Can you match the brick or stone on my Royal Tunbridge Wells house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
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.
How long does a rear extension take to build in Royal Tunbridge Wells?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Is the site visit in Royal Tunbridge Wells free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.