Chester-le-Street, County Durham
Glazed rear extension in Chester-le-Street
We plan and build glazed and glass-box rear extensions for homeowners in Chester-le-Street. Full-height glass, slim frames and big rooflights for the most open rear room. Start with a free site visit, then a written price once the design is agreed.
Chester-le-Street and its postcode districts DH2 are part of our County Durham coverage. Glass-led rear extensions in Chester-le-Street 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 Chester-le-Street?
A glazed rear extension in Chester-le-Street is priced at £2,520–£4,320 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 |
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 Chester-le-Street?
The planning route for a glazed rear extension in Chester-le-Street is set by England's householder rules and your council.
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. 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 Chester-le-Street like to extend?
Terraces and semis are typical around Chester-le-Street. On terraces a single-storey rear extension across the back yard is usually the practical choice; semis often have room for more.
How a glazed rear extension in Chester-le-Street 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Chester-le-Street
Neighbouring places we cover include Washington (3.7 miles) and Houghton-le-Spring (4.5 miles).
- Glazed rear extension in Washington
- Glazed rear extension in Houghton-le-Spring
- Glazed rear extension in Stanley
- Glazed rear extension in Durham
- Glazed rear extension in Hetton-le-Hole
Other work in Chester-le-Street:
FAQ
Glazed rear extension questions in Chester-le-Street
How much does a glazed rear extension cost in Chester-le-Street?
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.
Do I need planning permission for a rear extension in Chester-le-Street?
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.
Will a glass extension be too hot?
Not if it is designed for its orientation, with solar-control glass, shading and ventilation.
Do you handle building control in Chester-le-Street?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Chester-le-Street?
Including DH2, and the surrounding County Durham area.
Is the site visit in Chester-le-Street free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.