Washwood Heath, West Midlands
Glazed rear extension in Washwood Heath
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in Washwood Heath 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.
We cover Washwood Heath (B8, B9 and B24) as part of our West Midlands work. 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 Washwood Heath?
In Washwood Heath, our guide for a glazed rear extension is £2,800–£4,800 per square metre including VAT for a standard specification. The West Midlands is the baseline for our guide prices.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £33,500–£57,500 |
| 4 m wide × 6 m deep (24 m²) | £67,000–£115,000 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a glazed rear extension in Washwood Heath?
The planning route for a glazed rear extension in Washwood Heath is set by England's householder rules and your council.
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 Washwood Heath like to extend?
Red-brick terraces and 1930s semis make up much of Washwood Heath. Many already have a small kitchen lean-to at the back, which a new rear extension usually replaces rather than adds to.
How a glazed rear extension in Washwood Heath 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.
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 Washwood Heath
Close by, we work in Castle Vale, about 1.8 miles away, and Aston, about 2.4 miles away.
- Glazed rear extension in Castle Vale
- Glazed rear extension in Aston
- Glazed rear extension in Birmingham
- Glazed rear extension in Acocks Green
- Glazed rear extension in Hockley
Other work in Washwood Heath:
FAQ
Glazed rear extension questions in Washwood Heath
Do you handle building control in Washwood Heath?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Can you match the brick or stone on my Washwood Heath house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is there a limit on how much glass I can have?
In England the simple rule is 25% of the floor area plus openings removed; more is allowed with a calculation showing the house still meets Part L.
Do I need planning permission for a rear extension in Washwood Heath?
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.
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.
How much does a glazed rear extension cost in Washwood Heath?
As a guide, £2,800–£4,800 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £33,500–£57,500 at that rate. Your written price follows the survey.