Guildford, Surrey
Glazed rear extension in Guildford
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in Guildford 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.
Guildford sits in Surrey, with postcode districts including GU1, GU2 and GU4. If your garden in Guildford 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 Guildford?
Guide prices for a glazed rear extension in Guildford start from our South East England rate of £3,140–£5,380 per square metre, including VAT. 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a glazed rear extension in Guildford?
Planning for a glazed rear extension in Guildford follows the English householder rules.
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. 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 Guildford like to extend?
Commuter semis and detached houses make up much of Guildford, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a glazed rear extension in Guildford 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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 Guildford
Close by, we work in Godalming, about 3.8 miles away, and Woking, about 5.8 miles away.
- Glazed rear extension in Godalming
- Glazed rear extension in Woking
- Glazed rear extension in Cranleigh
- Glazed rear extension in Aldershot
- Glazed rear extension in Farnborough
Other work in Guildford:
FAQ
Glazed rear extension questions in Guildford
What postcode areas do you cover around Guildford?
Including GU1, GU2 and GU4, and the surrounding Surrey area.
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.
Does glass need planning permission?
The same rules apply as any rear extension; glass does not change the depth or height limits.
Can you match the brick or stone on my Guildford house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
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.