West Molesey, Surrey
Glazed rear extension in West Molesey
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in West Molesey 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.
West Molesey is covered from our Surrey round, including KT8, KT12 and KT13. If your garden in West Molesey 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 West Molesey?
For West Molesey we work from the South East England rate: £3,140–£5,380 per square metre of new floor, including VAT, standard specification. 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 West Molesey?
The planning route for a glazed rear extension in West Molesey 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. 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 West Molesey like to extend?
Commuter semis and detached houses make up much of West Molesey, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a glazed rear extension in West Molesey 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 West Molesey
We also build glazed and glass-box rear extensions in nearby Hampton (1.1 miles) and East Molesey (1.3 miles).
- Glazed rear extension in Hampton
- Glazed rear extension in East Molesey
- Glazed rear extension in Sunbury-on-Thames
- Glazed rear extension in Walton-on-Thames
- Glazed rear extension in Esher
Other work in West Molesey:
FAQ
Glazed rear extension questions in West Molesey
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.
Can you match the brick or stone on my West Molesey house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is a glass box a conservatory?
No. It is built to Building Regulations as part of the house, with insulated floor and roof, so it is usable all year.
How long does a rear extension take to build in West Molesey?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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 West Molesey free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.