House extensions in Broadstairs
Looking to extend your home in Broadstairs? Start here: extension types, guide prices for Broadstairs, the planning rules that apply and how a project runs.
- Postcode districtsCT10, CT11
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
Planning and building control in Broadstairs
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.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Guide prices for Broadstairs
Every figure below is a guide for Broadstairs, adjusted for South East England build costs (×1.12) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £33,500 – £43,500 |
| Wraparound extensions | 25 m² | £64,000 – £81,500 |
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Single-storey rear extensions | 20 m² | £45,500 – £58,500 |
| Orangery extensions | 16 m² | £50,000 – £63,000 |
| Kitchen extensions | 20 m² | £47,000 – £59,500 |
| Extensions over a garage | 12 m² | £28,000 – £36,500 |
Choosing the right extension in Broadstairs
In the South East, plenty of houses have already been extended once, which makes checking the remaining permitted development allowance an important early step.
Depending on the plot, wraparound extensions and orangery extensions are often the strongest options, with single-storey rear extensions worth considering where there is room.
Broadstairs and surrounding towns
Our survey diary covers Broadstairs, including CT10, CT11. Nearby, we also take on projects in Ramsgate (2 miles), Margate (3 miles), Deal (9 miles), Herne Bay (14 miles), Canterbury (17 miles). For homes towards Essex, Clacton-on-Sea is around 32 miles away.
Extension types and starting prices
- Kitchen extensions · from £30,000
- Porch extensions · from £4,450
- Wraparound extensions · from £40,000
- Conservatory replacement extensions · from £22,000
- Orangery extensions · from £33,500
- Home office extensions · from £17,500
- Side return extensions · from £20,000
- Bungalow extensions · from £29,000
- Pitched roof extensions · from £24,500
- Annexe extensions · from £61,500
- Extensions over a garage · from £26,500
- Side extensions · from £24,500
- Glass box extensions · from £33,500
- Planning permission for extensions · from £350
- Flat roof extensions · from £23,500
- Utility and boot room extensions · from £15,500
- Bedroom extensions · from £29,000
- Building regulations for extensions · from £1,000
- Double-storey extensions · from £42,500
- Timber frame extensions · from £23,500
- Extension plans and drawings · from £1,300
- Single-storey rear extensions · from £23,500
Free site visit
We visit your Broadstairs home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Broadstairs
How much does an extension cost in Broadstairs?
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 I need planning permission for an extension in Broadstairs?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
How long does an extension take in Broadstairs?
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.
Book a free site visit in Broadstairs
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.