Glass box extensions in Leamington Spa: design, approvals and build
A glass extension in Leamington Spa starts with the right design and the right approval route. We take care of both, then build it with our own project management.
- Guide price in Leamington SpaFrom £29,000 inc VAT
- PlanningSame limits as single-storey rear; glazing checked for building regs
- Build time10–16 weeks on site
- Postcode districtsCV31, CV32, CV33, CV34
What we take care of
- Drainage details for frameless roofs
- Solar-control and low-energy glass specification
- Planning drawings that show the glass detail
- Design with specialist glazing input
Planning and approvals in Leamington Spa
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.
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.
Applications are decided by the local planning authority (your district, borough or unitary council).
Working in Leamington Spa
Across CV31, CV32, CV33, CV34, we can visit, measure and advise. Nearby, we also take on projects in Warwick (3 miles), Kenilworth (5 miles), Stratford-upon-Avon (10 miles), Rugby (12 miles).
Just over the West Midlands border, Coventry is about 8 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.
Guide prices for Leamington Spa
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 Leamington Spa: £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 |
For a figure based on your own dimensions, use our guide-price tool.
Our process, step by step
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
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Glass extension questions answered
Do I need building regulations approval in Leamington Spa?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Who do I contract with for a glass extension in Leamington Spa?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Do you cover all of Leamington Spa?
Yes. We cover Leamington Spa and the surrounding parts of Warwickshire. Site visits are free and there is no obligation.
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 Leamington Spa.
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 Leamington Spa
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.