Extensions in Littlehampton: design, planning and build
More space without moving: we plan and build extensions across Littlehampton, with one team for the drawings, the council and the build.
- Postcode districtsBN16, BN17, BN18
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Littlehampton 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.
Start by comparing double-storey extensions, orangery extensions and wraparound extensions: between them they cover most of the layouts we see requested for houses like these.
Do extensions in Littlehampton need planning permission?
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 return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
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).
Littlehampton and surrounding towns
Site visits are available across Littlehampton (BN16, BN17, BN18). The same team covers Bognor Regis (6 miles), Worthing (7 miles), Lancing (10 miles), Chichester (11 miles), Shoreham-by-Sea (12 miles), all within easy reach. Portslade, in East Sussex, is roughly 14 miles from Littlehampton and also on our list.
Popular extension prices in Littlehampton
Use these Littlehampton guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £29,500 – £37,000 |
| Extensions over a garage | 12 m² | £28,000 – £36,500 |
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Conservatory replacement extensions | 14 m² | £33,500 – £43,500 |
| Kitchen extensions | 20 m² | £47,000 – £59,500 |
Every extension type in Littlehampton
- Planning permission for extensions · from £350
- Pitched roof extensions · from £24,500
- Building regulations for extensions · from £1,000
- Flat roof extensions · from £23,500
- Conservatory replacement extensions · from £22,000
- Bedroom extensions · from £29,000
- Extension plans and drawings · from £1,300
- Single-storey rear extensions · from £23,500
- Annexe extensions · from £61,500
- Bungalow extensions · from £29,000
- Double-storey extensions · from £42,500
- Timber frame extensions · from £23,500
- Side extensions · from £24,500
- Porch extensions · from £4,450
- Kitchen extensions · from £30,000
- Wraparound extensions · from £40,000
- Orangery extensions · from £33,500
- Utility and boot room extensions · from £15,500
- Home office extensions · from £17,500
- Side return extensions · from £20,000
- Extensions over a garage · from £26,500
- Glass box extensions · from £33,500
Free site visit
We visit your Littlehampton home, measure up, talk through what you want and check the planning position.
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
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Littlehampton
How much does an extension cost in Littlehampton?
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.
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 you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
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 Littlehampton?
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.
Book a free site visit in Littlehampton
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.