Holyhead, North Wales
Glazed rear extension in Holyhead
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in Holyhead 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.
Holyhead and its postcode districts LL65 are part of our North Wales coverage. A wide sliding door with one long rooflight, rather than a fully glazed roof, keeps a glass-led extension usable in summer.
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 Holyhead?
Guide prices for a glazed rear extension in Holyhead start from our Wales rate of £2,600–£4,460 per square metre, including VAT. 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a glazed rear extension in Holyhead?
Whether your glazed rear extension in Holyhead needs a planning application depends on its size, your house and any local restrictions.
The Welsh Government's householder rules let many homes add a single-storey rear extension up to 4 metres deep and 4 metres high without a planning application. Deeper projects go through a householder application, because Wales has no prior approval route.
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. 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 Holyhead like to extend?
Older terraces near the centre and post-war semis further out are typical of Holyhead. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a glazed rear extension in Holyhead comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Glazed rear extensions near Holyhead
From Holyhead, the nearest places we also cover are Bangor (21.5 miles) and Llandudno (33.1 miles).
- Glazed rear extension in Bangor
- Glazed rear extension in Llandudno
- Glazed rear extension in Colwyn Bay
- Glazed rear extension in Abergele
- Glazed rear extension in Rhyl
Other work in Holyhead:
FAQ
Glazed rear extension questions in Holyhead
How long does a rear extension take to build in Holyhead?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
How much does a glazed rear extension cost in Holyhead?
As a guide, £2,600–£4,460 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £31,000–£53,500 at that rate. Your written price follows the survey.
Does glass need planning permission?
The same rules apply as any rear extension; glass does not change the depth or height limits.
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.
What postcode areas do you cover around Holyhead?
Including LL65, and the surrounding North Wales area.
Do you handle building control in Holyhead?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.