Extensions and living spaces
Glass annexes
- Free design survey
- In-house building team
- Written quote before anything is ordered
How it's priced
Priced after a free design survey
Every glass annexes project is designed for its site, so we don't publish a misleading ‘typical’ price.
- 1We visit, measure and talk through what you want
- 2We design it and check planning and Building Regulations
- 3You get a written quote before anything is ordered
Overview
Why glass annexes?
A glass annexe adds a glazed room for guests, a family member or a quiet workspace — either attached to the house or standing in the garden.
Because an annexe may be lived or slept in, planning and Building Regulations need careful thought. We design, check and price each one after a free survey.
Flexible extra space
Guest room, studio, office or multi-generational living.
Glass-led design
Large glazing that opens the room to the garden.
Warm and efficient
Insulation and heating from our other divisions.
One team
Design, building and glazing coordinated by one project manager.
Priced after a free design survey
Tell us about your project
- A named project manager from the first visit
- Planning and Building Regulations checked for you
- Our own building team for openings and making good
Styles and options
Made to your specification
Glazing
- Sliding or bifold doors
- Feature and roof glazing
Comfort
- Insulation
- Heating and cooling
- Electrics
Good to know
Planning, regulations and timings
Planning permission
An annexe used as part of the household is treated differently from a separate dwelling, which needs planning permission. We'll advise at the design survey.
Building Regulations
Habitable rooms, and anywhere people sleep, need Building Regulations approval.
Designed after a free survey
Every one is designed for its site, so there is no honest 'typical' price. We measure and design it at a free design survey, and you get a written quote before anything is ordered.
Questions
Glass annexes: your questions answered
How much does a glass annexe cost?
Every one is designed for the site, so we price a glass annexe after a free design survey rather than quote a misleading 'typical' figure. You get a written quote before anything is ordered, and nothing is built until you've approved the design.
Does an annexe need planning permission?
It depends on its size, position and use. A self-contained dwelling always needs permission; an ancillary room may not. We check at the design survey.
Can someone live in a glass annexe?
Yes, if it's designed and approved as habitable space, with the insulation, heating, ventilation and fire safety that requires.
Keep exploring
Related products and services
Conservatories
Year-round conservatories with insulated roofs and high-performance glass.
Extensions
Glazed extensions designed and built by LINX, with in-house builders for openings and making good.
Orangeries
Solid-pillared orangeries with roof lanterns — more room than a conservatory, more light than an extension.
Brands we install
REHAU, SMART, AluK, Schüco, Cortizo, VELUX, FAKRO and Cambridge Skylights — and the tier each sits in.
Begin your project
Talk to us about your project
A free design survey, a written quote before anything is ordered, and one named project manager from start to finish.