Banbury, Oxfordshire
Glazed rear extension in Banbury
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in Banbury and want to know what a glazed rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Banbury is covered from our Oxfordshire round, including OX16. If your garden in Banbury 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 Banbury?
A glazed rear extension in Banbury is priced at £3,140–£5,380 per square metre including VAT as a guide, before kitchen fit-out and fees. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £37,500–£64,500 |
| 4 m wide × 6 m deep (24 m²) | £75,500–£129,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a glazed rear extension in Banbury?
The planning route for a glazed rear extension in Banbury 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. 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 Banbury like to extend?
Commuter semis and detached houses make up much of Banbury, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a glazed rear extension in Banbury 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Banbury
Close by, we work in Brackley, about 8.4 miles away, and Bicester, about 13.8 miles away.
- Glazed rear extension in Brackley
- Glazed rear extension in Bicester
- Glazed rear extension in Daventry
- Glazed rear extension in Buckingham
- Glazed rear extension in Kidlington
Other work in Banbury:
FAQ
Glazed rear extension questions in Banbury
What postcode areas do you cover around Banbury?
Including OX16, and the surrounding Oxfordshire area.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Will a glass extension be too hot?
Not if it is designed for its orientation, with solar-control glass, shading and ventilation.
Is the site visit in Banbury free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Banbury?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.