Building projects we take on in West Sussex
House extensions
- Single-storey extensions in West Sussex
- Double-storey extensions in West Sussex
- Side extensions in West Sussex
- Side return extensions in West Sussex
- Wraparound extensions in West Sussex
- Kitchen extensions in West Sussex
- Orangeries in West Sussex
- Glazed and contemporary extensions in West Sussex
- Porches in West Sussex
Loft conversions
- Dormer loft conversions in West Sussex
- Hip-to-gable loft conversions in West Sussex
- Mansard loft conversions in West Sussex
- Rooflight loft conversions in West Sussex
- Bungalow loft conversions in West Sussex
Garage, basement and barn conversions
- Garage conversions in West Sussex
- Basement conversions in West Sussex
- Barn conversions in West Sussex
- Garden annexes in West Sussex
New build homes
Renovations and structural work
Design and approvals
Guide prices in West Sussex
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £2,200–£3,250 per m² of floor area |
| Double-storey extensions | £1,850–£2,800 per m² of floor area (both floors) |
| Dormer loft conversions | £54,000–£76,000 for a typical rear dormer with en-suite |
| Garage conversions | £20,000–£33,500 for a single integral garage |
| House renovations | £1,000–£2,000 per m² for a medium to full renovation |
| New build homes | £2,250–£3,600 per m² of floor area (build cost) |
Prices across the South East are typically 12% above the UK average for this kind of work, which is reflected in the range for West Sussex.
Planning and building control in West Sussex
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
In England a rear dormer is often permitted development if the extra roof volume is no more than 40 cubic metres on a terraced house or 50 on other houses, it does not face the road, sits no higher than the ridge and is set back from the eaves, with matching materials and obscure-glazed side windows. Balconies, front dormers and work in conservation areas need planning permission.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
Building in West Sussex
Commuter towns across the South East have many 1930s and post-war semis that suit rear extensions and hip-to-gable loft conversions.
Questions about building in West Sussex
Do you cover all of West Sussex?
Yes. We take on projects across West Sussex, including Crawley, Worthing, Bognor Regis, Littlehampton and Horsham.
How much does an extension cost in West Sussex?
A single-storey extension in West Sussex typically costs £2,200–£3,250 per m² of floor area, including VAT.
Do I need planning permission in West Sussex?
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Who approves building work in West Sussex?
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.