Glass box extensions in Redcar
A glass extension in Redcar 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 RedcarFrom £28,000 inc VAT
- PlanningSame limits as single-storey rear; glazing checked for building regs
- Build time10–16 weeks on site
- Postcode districtsTS10, TS11

Planning rules that apply in Redcar
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).
What is included
- Planning drawings that show the glass detail
- Whole-house energy calculations where needed
- Solar-control and low-energy glass specification
- Steel or glass beams and slim-frame glazing
- Drainage details for frameless roofs
Covering Redcar
We cover Redcar and the postcode districts TS10, TS11. Neighbouring towns we cover include Middlesbrough (8 miles), Whitby (17 miles), Northallerton (26 miles), Scarborough (35 miles).
Hartlepool, in County Durham, is roughly 8 miles from Redcar and also on our list. Homes across Yorkshire and the Humber range from back-to-back and through terraces to large suburban semis, and extension options vary with them.
Glass extension prices in Redcar
For Redcar we adjust our national guide rates by ×0.94, the factor we use for Yorkshire and the Humber. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Redcar: £2,820 to £5,450 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 2 m × 4 m 8 m² | £28,000 – £34,000 | £28,000 – £35,500 | £32,000 – £44,000 |
| 3 m × 4 m 12 m² | £33,500 – £41,000 | £39,000 – £50,000 | £48,500 – £65,500 |
| 3 m × 6 m 18 m² | £50,500 – £61,000 | £59,000 – £74,500 | £72,500 – £98,500 |
Try the guide-price tool to see a range for your own size and finish.
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
We visit your Redcar home, measure up, talk through what you want and check the planning position.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
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
How long does a glass extension take to build in Redcar?
On site, typically 10 to 16 weeks once approvals are in place. Before that, allow 8–14 weeks design and approvals.
Will my neighbours in Redcar 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.
Who do I contract with for a glass extension in Redcar?
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.
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.
How much does a glass extension cost?
Our guide range is about £2,820 to £5,450 per m² including VAT, because structural glass is made to order. A 12 m² standard-spec glass extension is typically £39,000 to £50,000 in Redcar.
Book a free site visit in Redcar
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.