Extensions in Haywards Heath: design, planning and build
From a small utility to a two-storey addition, we take on house extensions throughout Haywards Heath, starting with a free visit and a planning check.
- Postcode districtsRH16, RH17
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
Choosing the right extension in Haywards Heath
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, wraparound extensions, single-storey rear extensions or double-storey extensions gives the most useful space for the budget.
Haywards Heath extension prices at a glance
We publish guide prices so you can budget before anyone visits. For Haywards Heath they are adjusted by ×1.12, the factor we use across South East England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £29,500 – £37,000 |
| Single-storey rear extensions | 20 m² | £45,500 – £58,500 |
| Conservatory replacement extensions | 14 m² | £33,500 – £43,500 |
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Wraparound extensions | 25 m² | £64,000 – £81,500 |
| Extensions over a garage | 12 m² | £28,000 – £36,500 |
Planning and building control in Haywards Heath
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).
Covering Haywards Heath and nearby
Postcode districts we cover around Haywards Heath include RH16, RH17. Nearby, we also take on projects in Burgess Hill (3 miles), Crawley (9 miles), East Grinstead (10 miles), Horsham (11 miles), Shoreham-by-Sea (14 miles). Uckfield, in East Sussex, is roughly 9 miles from Haywards Heath and also on our list.
Extension types and starting prices
- Single-storey rear extensions · from £23,500
- Side return extensions · from £20,000
- Orangery extensions · from £33,500
- Bedroom extensions · from £29,000
- Glass box extensions · from £33,500
- Double-storey extensions · from £42,500
- Extensions over a garage · from £26,500
- Pitched roof extensions · from £24,500
- Flat roof extensions · from £23,500
- Side extensions · from £24,500
- Utility and boot room extensions · from £15,500
- Timber frame extensions · from £23,500
- Bungalow extensions · from £29,000
- Extension plans and drawings · from £1,300
- Home office extensions · from £17,500
- Building regulations for extensions · from £1,000
- Planning permission for extensions · from £350
- Conservatory replacement extensions · from £22,000
- Porch extensions · from £4,450
- Wraparound extensions · from £40,000
- Annexe extensions · from £61,500
- Kitchen extensions · from £30,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Haywards Heath
How much does an extension cost in Haywards Heath?
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.
Do I need planning permission for an extension in Haywards Heath?
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 Haywards Heath
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.