Stockton-on-Tees, County Durham
Glazed rear extension in Stockton-on-Tees
We plan and build glazed and glass-box rear extensions for homeowners in Stockton-on-Tees. 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.
Stockton-on-Tees is covered from our County Durham round, including TS17, TS18, TS19 and TS20. If your garden in Stockton-on-Tees 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 Stockton-on-Tees?
For Stockton-on-Tees 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 |
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 Stockton-on-Tees?
Here is how the rules in England apply to a glazed rear extension in Stockton-on-Tees.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is 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. 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 Stockton-on-Tees like to extend?
Terraces and semis are typical around Stockton-on-Tees. 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 Stockton-on-Tees comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Stockton-on-Tees
Neighbouring places we cover include Billingham (1.8 miles) and Thornaby-on-Tees (2.5 miles).
- Glazed rear extension in Billingham
- Glazed rear extension in Thornaby-on-Tees
- Glazed rear extension in Ingleby Barwick
- Glazed rear extension in Middlesbrough
- Glazed rear extension in Yarm
Other work in Stockton-on-Tees:
FAQ
Glazed rear extension questions in Stockton-on-Tees
How long does a rear extension take to build in Stockton-on-Tees?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need planning permission for a rear extension in Stockton-on-Tees?
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.
Sliding or bifold doors?
Sliders give bigger panes and slimmer sightlines; bifolds open the whole width. Our guide compares them.
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.
Is the site visit in Stockton-on-Tees free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
What postcode areas do you cover around Stockton-on-Tees?
Including TS17, TS18, TS19 and TS20, and the surrounding County Durham area.