Glass box extensions for homes in Solihull
From the first sketch to final sign-off, we plan and build glass extensions in Solihull and the surrounding West Midlands area.
- Guide price in SolihullFrom £29,000 inc VAT
- PlanningSame limits as single-storey rear; glazing checked for building regs
- Build time10–16 weeks on site
- Postcode districtsB27, B28, B90, B91, B92
How much does a glass extension cost in Solihull?
Prices below are for Solihull, using the West Midlands factor of ×0.97. They are guide ranges including VAT for the build only, not a quote.
Typical rates in Solihull: £2,910 to £5,630 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 2 m × 4 m 8 m² | £29,000 – £35,000 | £29,000 – £37,000 | £33,000 – £45,500 |
| 3 m × 4 m 12 m² | £34,500 – £42,000 | £40,500 – £51,500 | £50,000 – £68,000 |
| 3 m × 6 m 18 m² | £52,000 – £63,000 | £61,000 – £77,000 | £75,000 – £101,500 |
Want a range for your exact size? The guide-price tool takes about a minute.
Extensions in and around Solihull
Site visits are available across Solihull (B27, B28, B90, B91, B92, B93). The same team covers Shirley (2 miles), Birmingham (7 miles), Smethwick (10 miles), Sutton Coldfield (11 miles), all within easy reach.
Just over the Warwickshire border, Kenilworth is about 9 miles away. Across the West Midlands, brick-built semis with long gardens are common, so single-storey and two-storey rear extensions are popular choices.
Planning and approvals in Solihull
In England a glazed or orangery-style extension follows the same size limits as any single-storey rear extension: 3 m or 4 m without an application, or up to 6 m and 8 m through prior approval. Building regulations limit glazing to about a quarter of the new floor area plus the openings it replaces, unless whole-house calculations show the design still performs.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
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.
Applications are decided by the local planning authority (your district, borough or unitary council).
Who a glass extension suits
- Garden-facing dining rooms
- Small infill spaces and side returns
- Period and listed-style houses where a light touch is wanted
Solar gain is the risk. We specify solar-control glass, plan for opening vents or sliding panels, and avoid fully glazed roofs on south-facing extensions unless shading is included.
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
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Glass extension questions answered
Do you cover all of Solihull?
Yes. We cover Solihull and the surrounding parts of West Midlands. Site visits are free and there is no obligation.
Do I need building regulations approval in Solihull?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Will my neighbours in Solihull 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.
How much does a glass extension cost?
Our guide range is about £2,910 to £5,630 per m² including VAT, because structural glass is made to order. A 12 m² standard-spec glass extension is typically £40,500 to £51,500 in Solihull.
Are glass extensions cold in winter?
Modern double or triple glazing with warm-edge spacers and underfloor heating keeps them comfortable. They are not as warm as a solid room, and we explain the trade-off honestly.
Book a free site visit in Solihull
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.