Annexe extensions for homes in Wolverhampton
Thinking about an annexe extension for your Wolverhampton home? Start with a free site visit: we measure up, check what the council will allow and give you honest guide figures on the day.
- Guide price in WolverhamptonFrom £53,000 inc VAT
- PlanningUsually a householder application
- Build time16–24 weeks on site
- Postcode districtsWV1, WV2, WV3, WV4, WV6

Guide prices for Wolverhampton
These guide figures apply our West Midlands adjustment (×0.97) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Wolverhampton: £1,940 to £3,690 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Studio annexe 25 m² | £53,000 – £67,000 | £58,000 – £73,000 | £72,500 – £92,500 |
| One-bedroom annexe 35 m² | £67,500 – £85,000 | £81,000 – £102,000 | £101,500 – £129,500 |
| Larger annexe 45 m² | £87,000 – £109,500 | £104,500 – £131,000 | £130,500 – £166,000 |
For a figure based on your own dimensions, use our guide-price tool.
Planning and approvals in Wolverhampton
In England an annexe that stays part of the household and connects to the house is assessed as an extension, but its size usually takes it beyond permitted development, so a householder application describing the ancillary use is the normal route.
Homes in conservation areas, national parks, National Landscapes (formerly AONBs), the Broads and World Heritage Sites have tighter rules, so we always check the property's status and planning history before design starts.
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).
Is an annexe extension right for your house?
- Relatives who need support close by
- Multi-generational families
- Homes with a large side or rear garden
Extensions in and around Wolverhampton
Postcode districts we cover around Wolverhampton include WV1, WV2, WV3, WV4, WV6, WV10. We also work in nearby Wednesfield (2 miles), Willenhall (3 miles), Tipton (5 miles), Wednesbury (5 miles).
Just over the Staffordshire border, Great Wyrley is about 7 miles away. The West Midlands has a large stock of 1930s and post-war semi-detached houses, which are well suited to rear, side and over-garage extensions, plus Victorian terraces in the older inner areas.
What happens next
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 draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions people ask about annexe extensions
Do I need building regulations approval in Wolverhampton?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Will my neighbours in Wolverhampton 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.
Do you cover all of Wolverhampton?
Yes. We cover Wolverhampton and the surrounding parts of West Midlands. Site visits are free and there is no obligation.
Does an annexe extension need planning permission?
Usually yes, because of its size and the way it will be used. Councils check that it stays ancillary to the main house, so the application must describe the use clearly.
Can the annexe have its own front door?
Yes, many do, but it should still connect to the main house to stay clearly part of it.
Book a free site visit in Wolverhampton
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.