Hurstpierpoint, West Sussex
Glazed rear extension in Hurstpierpoint
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in Hurstpierpoint and want to know what a glazed rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Hurstpierpoint is covered from our West Sussex round, including BN6, BN45 and RH15. Glass-led rear extensions in Hurstpierpoint are planned around which way the garden faces, because that decides the glass specification.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a glazed rear extension cost in Hurstpierpoint?
For Hurstpierpoint we work from the South East England rate: £3,140–£5,380 per square metre of new floor, including VAT, standard specification. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £37,500–£64,500 |
| 4 m wide × 6 m deep (24 m²) | £75,500–£129,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a glazed rear extension in Hurstpierpoint?
Here is how the rules in England apply to a glazed rear extension in Hurstpierpoint.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
New fabric must meet Approved Document L (2021 edition incorporating 2023 amendments): walls 0.18, roof 0.15 and floor 0.18 W/m²K, windows 1.4 W/m²K or Band B. Under the simple route, new windows, doors and rooflights should not exceed 25% of the extension floor area plus any openings removed; more glass is possible with a whole-house calculation.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Hurstpierpoint like to extend?
Around Hurstpierpoint the housing ranges from inter-war semis to 1960s and 1970s estates with good-sized gardens. Many of the newer estates had permitted development rights removed by condition, so we check the planning history before anything is drawn.
How a glazed rear extension in Hurstpierpoint comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Glazed rear extensions near Hurstpierpoint
Neighbouring places we cover include Burgess Hill (2.7 miles) and Portslade (6.5 miles).
- Glazed rear extension in Burgess Hill
- Glazed rear extension in Portslade
- Glazed rear extension in Hove
- Glazed rear extension in Brighton
- Glazed rear extension in Shoreham-by-Sea
Other work in Hurstpierpoint:
FAQ
Glazed rear extension questions in Hurstpierpoint
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
How long does a rear extension take to build in Hurstpierpoint?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Does glass need planning permission?
The same rules apply as any rear extension; glass does not change the depth or height limits.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Do I need planning permission for a rear extension in Hurstpierpoint?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Do you handle building control in Hurstpierpoint?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.