Blyth, Northumberland
Glazed rear extension in Blyth
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 Blyth and the surrounding area, with one contract from the first survey to building control sign-off.
Blyth and its postcode districts NE23 and NE24 are part of our Northumberland 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 Blyth?
A glazed rear extension in Blyth 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 |
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 Blyth?
Whether your glazed rear extension in Blyth needs a planning application depends on its size, your house and any local restrictions.
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 Blyth like to extend?
Terraces and semis are typical around Blyth. 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 Blyth 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.
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.
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 Blyth
Close by, we work in Bedlington, about 3.4 miles away, and Ashington, about 4.1 miles away.
- Glazed rear extension in Bedlington
- Glazed rear extension in Ashington
- Glazed rear extension in Cramlington
- Glazed rear extension in Whitley Bay
- Glazed rear extension in Morpeth
Other work in Blyth:
FAQ
Glazed rear extension questions in Blyth
What postcode areas do you cover around Blyth?
Including NE23 and NE24, and the surrounding Northumberland area.
Is the site visit in Blyth free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can I have a level threshold?
Yes, with a drainage channel outside the doors and the slab set to the patio level.
Do I need planning permission for a rear extension in Blyth?
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.
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.
Do you handle building control in Blyth?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.