Extending your home in Whitstable
Looking to extend your home in Whitstable? Start here: extension types, guide prices for Whitstable, the planning rules that apply and how a project runs.
- Postcode districtsCT5
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
Which extension suits a Whitstable home?
The South East has a broad mix of 1930s semis, post-war estates, newer developments and period cottages, and many houses have enough garden for a generous rear extension.
For many houses here, double-storey extensions, wraparound extensions or single-storey rear extensions gives the most useful space for the budget.
Planning rules in Whitstable
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Popular extension prices in Whitstable
We publish guide prices so you can budget before anyone visits. For Whitstable they are adjusted by ×1.12, the factor we use across South East England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £50,000 – £63,000 |
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Extensions over a garage | 12 m² | £28,000 – £36,500 |
| Single-storey rear extensions | 20 m² | £45,500 – £58,500 |
| Side return extensions | 11 m² | £29,500 – £37,000 |
| Kitchen extensions | 20 m² | £47,000 – £59,500 |
Areas we cover around Whitstable
Site visits are available across Whitstable (CT5). The same team covers Herne Bay (5 miles), Canterbury (6 miles), Faversham (7 miles), Sittingbourne (13 miles), Margate (16 miles), all within easy reach. Just over the Essex border, Southend-on-Sea is about 18 miles away.
Choose an extension type
- Utility and boot room extensions · from £15,500
- Annexe extensions · from £61,500
- Wraparound extensions · from £40,000
- Double-storey extensions · from £42,500
- Conservatory replacement extensions · from £22,000
- Kitchen extensions · from £30,000
- Extensions over a garage · from £26,500
- Extension plans and drawings · from £1,300
- Home office extensions · from £17,500
- Single-storey rear extensions · from £23,500
- Building regulations for extensions · from £1,000
- Flat roof extensions · from £23,500
- Bedroom extensions · from £29,000
- Bungalow extensions · from £29,000
- Pitched roof extensions · from £24,500
- Side extensions · from £24,500
- Glass box extensions · from £33,500
- Orangery extensions · from £33,500
- Side return extensions · from £20,000
- Timber frame extensions · from £23,500
- Porch extensions · from £4,450
- Planning permission for extensions · from £350
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Whitstable
How much does an extension cost in Whitstable?
Using our South East England factor (×1.12), a standard-spec single-storey extension of 20 m² is a guide £45,500 to £58,500 including VAT, and a 32 m² two-storey extension £64,500 to £84,500. Your written price follows the survey.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
How long does an extension take in Whitstable?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Whitstable, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Whitstable
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.