• FREEPHONE: 0800 292 7707


We are proud to offer bespoke hand-built garden rooms, working across Sussex & Surrey. We have 38 years’ experience in the construction industry and a majority of this time constructing garden rooms/studios/office/gym etc. Our studios enable our customers to create extra living/workspace they require whilst adding value to their property. Book a FREE site survey and we can discuss your ideas and guide you through the design and build process. All our studios are built on-site by our team of highly skilled craftsmen, built to your specifications whilst still enabling you to make changes as the build progresses.

We aim to exceed your expectations and we will.

Consultation & Design Process | Bespoke Garden Rooms & Offices | Groundworks |
Electrical & Plumbing Options | Project Management

Recently Completed Projects

What Our Customer Say

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Our insulated garden rooms are designed and built bespoke to our client’s specifications. Once we have conducted a site survey, we will provide you with a free quotation and rendered drawing of your proposed studio. Once you are happy with the design work we can arrange a suitable start date.

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Something we are often asked is, ‘will I require planning permission’… The answer is no, it is not usually required as our garden rooms comply with permitted development laws. Planning differs if you live in a listed building or conservation area. We are happy to clarify any uncertainty and answer any questions you may have.


Built with FSC-sourced timber, woven into the structure are insulated Celotex panels in the floor, roof, and walls. Correct use of Celotex insulation will make substantial energy savings over time compared to conventionally insulated garden buildings.

Rendered animation of a 3.8 x 3 metre garden studio – cost £22k including vat

Our clients use their garden studios for a variety of purposes. Anything from an artist’s studio. A snooker room in which to enjoy your hobby. A home gym to work out in private or a garden office can help reduce the daily commute. A garden studio can be a fantastic blend of both indoors and outdoors.

Above all, we would love to discuss your ideas to see how we can help create your perfect garden studio.

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Our insulated garden rooms are all bespoke

CGS specialises in building insulated garden rooms that are bespoke built. Our garden rooms are built to order so that you maintain complete control.

We are able to run a very lean business because we have no warehousing or expensive showrooms – which our competitors will likely need to charge for. However, that does not compromise our ability to construct and deliver the highest quality, beautiful garden rooms.

There are many reasons to choose CGS. Above all, we pride ourselves on our ability to deliver beautiful, off-plan garden studios.

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Benefits with CGS

Planning Compliant (under 2.5m)
NoNo, required planning permission. Our garden rooms comply with permitted development laws

Super Insulated Garden Rooms
Celotex panels in the floor, roof & walls

Energy Efficient
More thermally efficient than most
domestic settings

Bespoke Built
Designed & built bespoke to various shapes and sizes based on our client’s specifications

Quality Guaranteed
Constructed from the highest quality materials and built to the highest standards

FREE Site Survey
Call today for a FREE site survey we are happy to discuss your ideas
Freephone: 0800 292 7707

3D Rendered Drawings

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We include a 3D rendered drawing with our estimates.

Please ask for details
FREPHONE: 0800 292 7707

Family looking at garden room