Home extensions in Hastings
Planning an extension in Hastings? Compare extension types, see guide prices adjusted for Hastings and book a free site visit.
- Postcode districtsTN34, TN35, TN37, TN38, TN40
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
Hastings and surrounding towns
Site visits are available across Hastings (TN34, TN35, TN37, TN38, TN40). The same team covers Bexhill-on-Sea (5 miles), Hailsham (14 miles), Eastbourne (14 miles), Seaford (22 miles), Uckfield (23 miles), all within easy reach. Just over the Kent border, Tunbridge Wells is about 24 miles away.
Popular extension prices in Hastings
We publish guide prices so you can budget before anyone visits. For Hastings they are adjusted by ×1.12, the factor we use across South East England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £64,000 – £81,500 |
| Single-storey rear extensions | 20 m² | £45,500 – £58,500 |
| Orangery extensions | 16 m² | £50,000 – £63,000 |
| Side return extensions | 11 m² | £29,500 – £37,000 |
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Conservatory replacement extensions | 14 m² | £33,500 – £43,500 |
What works best for Hastings houses?
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, double-storey extensions and orangery extensions are often the strongest options, with wraparound extensions worth considering where there is room.
Planning rules in Hastings
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).
Every extension type in Hastings
- Building regulations for extensions · from £1,000
- Extensions over a garage · from £26,500
- Side extensions · from £24,500
- Utility and boot room extensions · from £15,500
- Kitchen extensions · from £30,000
- Conservatory replacement extensions · from £22,000
- Single-storey rear extensions · from £23,500
- Bungalow extensions · from £29,000
- Bedroom extensions · from £29,000
- Flat roof extensions · from £23,500
- Planning permission for extensions · from £350
- Glass box extensions · from £33,500
- Side return extensions · from £20,000
- Timber frame extensions · from £23,500
- Porch extensions · from £4,450
- Home office extensions · from £17,500
- Extension plans and drawings · from £1,300
- Wraparound extensions · from £40,000
- Orangery extensions · from £33,500
- Annexe extensions · from £61,500
- Pitched roof extensions · from £24,500
- Double-storey extensions · from £42,500
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
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
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 Hastings
How much does an extension cost in Hastings?
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.
How long does an extension take in Hastings?
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.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Do I need planning permission for an extension in Hastings?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Hastings
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.