Castle Vale, West Midlands
Kitchen-diner rear extension in Castle Vale
For homes in Castle Vale, a kitchen-diner rear extension is often the simplest way to gain space without moving. An open-plan kitchen, dining and family room that opens straight onto the garden. We take it from survey to completion certificate.
Castle Vale and its postcode districts B24, B34 and B35 are part of our West Midlands coverage. A kitchen-diner is often the reason people in Castle Vale extend: the back kitchen in red-brick terraces and 1930s semis is rarely big enough for a table.
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 kitchen-diner rear extension cost in Castle Vale?
In Castle Vale, our guide for a kitchen-diner rear extension is £1,900–£3,100 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) | £23,000–£37,000 |
| 4 m wide × 5 m deep (20 m²) | £38,000–£62,000 |
| 4 m wide × 6 m deep (24 m²) | £45,500–£74,500 |
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 kitchen-diner rear extension in Castle Vale?
Whether your kitchen-diner rear extension in Castle Vale needs a planning application depends on its size, your house and any local restrictions.
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.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
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 Castle Vale like to extend?
Red-brick terraces and 1930s semis make up much of Castle Vale. Many already have a small kitchen lean-to at the back, which a new rear extension usually replaces rather than adds to.
How a kitchen-diner rear extension in Castle Vale 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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.
Kitchen-diner rear extensions near Castle Vale
From Castle Vale, the nearest places we also cover are Washwood Heath (1.8 miles) and Sutton Coldfield (3.4 miles).
- Kitchen-diner rear extension in Washwood Heath
- Kitchen-diner rear extension in Sutton Coldfield
- Kitchen-diner rear extension in Chelmsley Wood
- Kitchen-diner rear extension in Aston
- Kitchen-diner rear extension in Acocks Green
Other work in Castle Vale:
FAQ
Kitchen-diner rear extension questions in Castle Vale
What postcode areas do you cover around Castle Vale?
Including B24, B34 and B35, and the surrounding West Midlands area.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Should the sink face the garden?
If the plan allows, an island sink or hob facing the glass is a common choice. It needs a floor-level drain run, which is easy to lay in a new slab.
How long does a rear extension take to build in Castle Vale?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
Do I need planning permission for a rear extension in Castle Vale?
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.