Two-storey wraparound extensions in Haywards Heath
Adding a two-storey wraparound extension in Haywards Heath gives you two new rooms stacked on one footprint. Here's how we'd approach it, what it typically costs and the rules that apply in England.
Haywards Heath: the key facts for this kind of project.
- Postcode districts
- RH16 and RH17
- County / area
- West Sussex, England
- Price region
- South East England
- Guide price
- £132,500–£181,500 (£2,360–£3,250 per m²)
- Approval route
- Planning permission is needed: the side part takes it outside permitted development in England.
- Nearest towns
- Burgess Hill (3 miles), Hurstpierpoint (5.5 miles), Broadfield (8.2 miles)
- Distance to Crawley
- about 8.7 miles
- First visit
- Free, no obligation
About a two-storey wraparound extension
A two-storey wraparound extension suits a house with space both beside it and behind it, where you want to transform the layout rather than add a single room. You get one design for the whole L-shape, the planning application, structural design for the corner and the openings into the house, building regulations approval and the build, managed by us and carried out by vetted teams working under S&K.
Haywards Heath sits about 8.7 miles from Crawley. Closer to home, Burgess Hill is 3.0 miles away and Hurstpierpoint 5.5 miles.
What it costs in Haywards Heath
Most of the cost of a two-storey wraparound extension is set by its size and specification. For Haywards Heath and the rest of South East England, our guide is £2,360–£3,250 per m² including VAT, so about £132,500–£181,500 for an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space). We'll give you a written design-stage price first, then a fixed build price once the drawings are agreed.
| Spec | Per m² | An L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space) |
|---|---|---|
| Essential | £2,180–£2,990 per m² | £122,000–£167,000 |
| Standard | £2,360–£3,250 per m² | £132,500–£181,500 |
| Premium | £2,840–£3,890 per m² | £159,000–£218,000 |
Planning and building regulations in Haywards Heath
In England, a two-storey wraparound extension needs householder planning permission, because any extension beyond a side wall must be single storey to be permitted development. The application costs £548 (or £575 for applications made from 8 December 2026). Councils weigh the side part against the street scene and the rear part against neighbours' light and outlook, and should decide within 8 weeks of validation.
Approval in England: Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
Building regulations: Building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end.
Design points for Haywards Heath homes
Daylight to the middle
A deep L-shaped plan can leave the middle of the ground floor dark, because the old rear rooms are now enclosed. We use wide rear openings, a well-placed stair and, where part of the extension is single storey, roof lights, while keeping total glazing within the Part L allowance.
The corner post
At the outside corner of the L, there is no existing wall to carry the floor above. Opening the ground floor fully usually means a steel frame or a corner post, and the engineer's design sets how slim it can be. We decide early whether you want a clear corner or a visible post.
How we'd run your project
Understand the brief
At your home in Haywards Heath we agree what you need: bedroom count, bathroom, kitchen space, and how much garden you want to keep.
Design and approvals
We draw the extension and check it against the rules for England, then apply for planning permission or a certificate of lawfulness, whichever fits.
Engineer it
Foundations sized for two floors, steels for any openings, and building control approval, all before anyone starts on site.
On site
One project lead runs the job, keeps you updated and arranges inspections at each stage until completion.
Questions about two-storey wraparound extensions in Haywards Heath
How much does a two-storey wraparound extension cost in Haywards Heath?
Our guide for South East England, which covers Haywards Heath, is £2,360–£3,250 per m² including VAT. A typical project with an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space) comes to about £132,500–£181,500. Design and approval fees are extra, and we fix the build price in writing once the design is agreed.
Who handles building regulations for a project in Haywards Heath?
We handle it as part of the project. What's needed in England: building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end. We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.
Which postcodes do you cover around Haywards Heath?
We cover Haywards Heath (RH16 and RH17) and nearby places including Burgess Hill, Hurstpierpoint and Broadfield, plus the rest of West Sussex. The first site visit is free.
Can a wraparound extension be part single, part two-storey?
Yes. Many wraparounds keep the rear part single storey with roof lights over the kitchen and put the two-storey part to the side. This can reduce the effect on neighbours and the cost. We set out both options at the design stage, so you can compare floor space against price before choosing.
How much floor space does a wraparound extension add?
It depends on the width of the side plot and the depth at the rear. Our guide prices are based on a typical wraparound with an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space). Yours may be larger or smaller, and the measured survey shows what your plot can take.
Nearby
Other towns near Haywards Heath:
Other extensions in Haywards Heath
- Rear
- Side
- Part two-storey
- Over a garage
- First floor
- Semi-detached
- Detached
- Kitchen and bedrooms
- Bedroom and en-suite
All two-storey extension services in Haywards Heath · Two-storey wraparound extensions across West Sussex
Tell us about your house in Haywards Heath and we'll call you back to arrange a free, no-obligation visit.