Stowmarket, Suffolk
Glazed rear extension in Stowmarket
We plan and build glazed and glass-box rear extensions for homeowners in Stowmarket. 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.
Stowmarket sits in Suffolk, with postcode districts including IP14. 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 Stowmarket?
A glazed rear extension in Stowmarket is priced at £2,970–£5,090 per square metre including VAT as a guide, before kitchen fit-out and fees. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £35,500–£61,000 |
| 4 m wide × 6 m deep (24 m²) | £71,000–£122,000 |
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 Stowmarket?
Here is how the rules in England apply to a glazed rear extension in Stowmarket.
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 Stowmarket like to extend?
Post-war semis and newer estates are typical of Stowmarket, and many have room for a full-width extension. Shrinkable clay is common in the East of England, so foundations near trees and hedges are designed to NHBC-style depth guidance. If your garden in Stowmarket faces south, expect us to talk about overhangs and solar-control glass before frame colours.
How a glazed rear extension in Stowmarket 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.
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 Stowmarket
We also build glazed and glass-box rear extensions in nearby Ipswich (11.2 miles) and Bury St Edmunds (12.8 miles).
- Glazed rear extension in Ipswich
- Glazed rear extension in Bury St Edmunds
- Glazed rear extension in Kesgrave
- Glazed rear extension in Diss
- Glazed rear extension in Woodbridge
Other work in Stowmarket:
FAQ
Glazed rear extension questions in Stowmarket
Can you match the brick or stone on my Stowmarket house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is the site visit in Stowmarket free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Does glass need planning permission?
The same rules apply as any rear extension; glass does not change the depth or height limits.
How much does a glazed rear extension cost in Stowmarket?
As a guide, £2,970–£5,090 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £35,500–£61,000 at that rate. Your written price follows the survey.
Do you handle building control in Stowmarket?
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 Stowmarket?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.