Ystalyfera, Swansea Bay
Glazed rear extension in Ystalyfera
Full-height glass, slim frames and big rooflights for the most open rear room. We design, get the approvals for and build glazed and glass-box rear extensions in Ystalyfera and the surrounding area, with one contract from the first survey to building control sign-off.
Ystalyfera sits in Swansea Bay, with postcode districts including SA9. If your garden in Ystalyfera faces south, expect us to talk about overhangs and solar-control glass before frame colours.
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 Ystalyfera?
In Ystalyfera, our guide for a glazed rear extension is £2,600–£4,460 per square metre including VAT for a standard specification. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £31,000–£53,500 |
| 4 m wide × 6 m deep (24 m²) | £62,500–£107,000 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a glazed rear extension in Ystalyfera?
Whether your glazed rear extension in Ystalyfera needs a planning application depends on its size, your house and any local restrictions.
Welsh permitted development allows a single-storey rear extension of up to 4 metres in depth and 4 metres in height, subject to boundary and garden-coverage limits. There is no larger-extension prior approval scheme in Wales.
Wales has its own Approved Document L, with targets for walls, roofs, floors and glazing similar to but not identical with England's. Heavily glazed designs are checked with a calculation.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Ystalyfera like to extend?
Ystalyfera has Victorian terraces near the centre and semis further out. Welsh permitted development allows up to 4 metres at the rear for many houses.
How a glazed rear extension in Ystalyfera comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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 Ystalyfera
We also build glazed and glass-box rear extensions in nearby Neath (7.3 miles) and Clydach (7.7 miles).
- Glazed rear extension in Neath
- Glazed rear extension in Clydach
- Glazed rear extension in Ammanford
- Glazed rear extension in Briton Ferry
- Glazed rear extension in Maesteg
Other work in Ystalyfera:
FAQ
Glazed rear extension questions in Ystalyfera
Is the site visit in Ystalyfera free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Ystalyfera?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Sliding or bifold doors?
Sliders give bigger panes and slimmer sightlines; bifolds open the whole width. Our guide compares them.
How long does a rear extension take to build in Ystalyfera?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.