Hetton-le-Hole, County Durham
Glazed rear extension in Hetton-le-Hole
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 Hetton-le-Hole and the surrounding area, with one contract from the first survey to building control sign-off.
Hetton-le-Hole is covered from our County Durham round, including DH4 and DH5. 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 Hetton-le-Hole?
For Hetton-le-Hole we work from the North East England rate: £2,520–£4,320 per square metre of new floor, including VAT, standard specification. North East prices are among the lowest in our range; former mining ground is the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £30,000–£52,000 |
| 4 m wide × 6 m deep (24 m²) | £60,500–£103,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a glazed rear extension in Hetton-le-Hole?
Here is how the rules in England apply to a glazed rear extension in Hetton-le-Hole.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres 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. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Hetton-le-Hole like to extend?
Brick terraces, colliery houses and post-war semis make up much of Hetton-le-Hole. Former mining areas often need a coal mining risk check before foundations are designed.
How a glazed rear extension in Hetton-le-Hole 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.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Glazed rear extensions near Hetton-le-Hole
We also build glazed and glass-box rear extensions in nearby Houghton-le-Spring (1.7 miles) and Seaham (4.4 miles).
- Glazed rear extension in Houghton-le-Spring
- Glazed rear extension in Seaham
- Glazed rear extension in Ryhope
- Glazed rear extension in Durham
- Glazed rear extension in Chester-le-Street
Other work in Hetton-le-Hole:
FAQ
Glazed rear extension questions in Hetton-le-Hole
Is the site visit in Hetton-le-Hole free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.
Sliding or bifold doors?
Sliders give bigger panes and slimmer sightlines; bifolds open the whole width. Our guide compares them.
Do you handle building control in Hetton-le-Hole?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
How long does a rear extension take to build in Hetton-le-Hole?
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 Hetton-le-Hole?
As a guide, £2,520–£4,320 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £30,000–£52,000 at that rate. Your written price follows the survey.