Wraparound extensions in Birmingham: design, approvals and build
From the first sketch to final sign-off, we plan and build wraparound extensions in Birmingham and the surrounding West Midlands area.
- Guide price in BirminghamFrom £34,500 inc VAT
- PlanningUsually a householder application
- Build time14–20 weeks on site
- Postcode districtsB1, B2, B3, B4, B5
What is included
- Structural design for the corner and openings
- Foundations, drainage and any manhole relocation
- Survey, design and 3D layout options
- Full internal finish or kitchen-ready shell
- Party wall notice support (England and Wales)
Local to Birmingham
Across B1, B2, B3, B4, B5, B19, we can visit, measure and advise. The same team covers Smethwick (3 miles), West Bromwich (5 miles), Shirley (6 miles), Halesowen (7 miles), all within easy reach.
Across the West Midlands, brick-built semis with long gardens are common, so single-storey and two-storey rear extensions are popular choices.
Guide prices for Birmingham
Labour and material costs vary across the UK, so for Birmingham we use our West Midlands factor (×0.97). The ranges include VAT and exclude design, structural and council fees.
Typical rates in Birmingham: £1,940 to £3,590 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Compact L-shape 18 m² | £34,500 – £42,000 | £40,000 – £51,000 | £50,500 – £65,000 |
| Medium L-shape 25 m² | £48,500 – £58,500 | £55,500 – £70,500 | £70,000 – £90,000 |
| Large L-shape 32 m² | £62,000 – £74,500 | £71,000 – £90,500 | £90,000 – £115,000 |
For a figure based on your own dimensions, use our guide-price tool.
Planning and approvals in Birmingham
In England a wraparound extension is assessed as both a side and a rear extension, and the combination usually falls outside permitted development, so most need a householder planning application (£548 from 1 April 2026).
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
Building over or within 3 m of a public sewer needs the water company's consent, usually through a build-over agreement, before the foundations go in.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
How the project works
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions people ask about wraparound extensions
Do you cover all of Birmingham?
Yes. We cover Birmingham and the surrounding parts of West Midlands. Site visits are free and there is no obligation.
How long does a wraparound extension take to build in Birmingham?
On site, typically 14 to 20 weeks once approvals are in place. Before that, allow 8–16 weeks design and approvals.
Will my neighbours in Birmingham be involved?
If a planning application or prior approval is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
Is a wraparound better than a side return alone?
It adds far more space, but costs more and needs planning permission more often. Our comparison guide sets the two side by side.
Do wraparound extensions need planning permission?
Usually, yes. In England the side element counts as a side extension and the rear element as a rear extension, and the combination normally falls outside permitted development. A householder application costs £548 in England from 1 April 2026.
Book a free site visit in Birmingham
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.