Building beautiful Garden Rooms across Sussex and Surrey
Add space, value and lifestyle without moving home
We can create your dream garden retreat in days
Our Services
At The Garden Room & Annex Company, we take pride in designing and building high-quality, bespoke garden rooms, offices and annexes that are built to stand the test of time.
Our team have a combined 45 years of experience building garden rooms and annexes in the Sussex and Surrey area. We have refined our construction methods over this time with innovative insights from our peers and industry leading designers, manufacturers, builders and carpenters.
Our garden rooms are built using advanced Structurally Insulated Panels (SIPs), providing superior strength, insulation, and efficiency -allowing for rapid construction in just a few days. We have a transparent pricing policy so you have peace of mind that there are no hidden extras.
Why Choose Us?
A trusted local company with many years experience offering a 10 year guarantee.
We build a fully-finished garden room - from foundations to flooring - ready for you to move in and personalize your new outdoor space.
The Garden Room & Annex Company’s unique after-care pledge: our team will return after 6 months to make sure your garden room is still as perfect as the day we handed over the keys.
Our garden rooms are designed and tailor-made just for you.
“Absolutely blown away by our new garden room. Grant and the team were quick, professional, on-time (in fact beat the expected deadline) and we ended up with a fantastic office/garden room. Very very pleased with all aspects. They also dealt with every last minute change we threw at them. Offered advice on local regulations. Suggested design improvements. We love it and could not recommended any more highly.”
Hugh & Sophie, Brighton
Every garden room, annexe and extension we build meets exacting standards and is backed by our 10 year guarantee, ensuring long-lasting quality and customer satisfaction. Our annexes and extensions are designed and built to exceed building regulations and have a life expectancy of more than 50 years. Where permitted development rights are not applicable, our own in-house planning team can advise and complete the planning application process on your behalf.
Our Approach
Talk To Us
Our team will take the time to understand your garden room needs and help you choose the perfect solution, whether it's a functional garden office or a spacious multi-room annex.
Free Home Visit
We offer a free, no obligation home visit to provide expert advice on design options, add-ons, pricing and solutions tailored to you and your budget to create your ideal garden room or annex.
Quotation
After completing the site survey and understanding your requirements, we will provide you with a detailed, fully itemized quote. We take pride in offering transparent pricing with no hidden costs.
Start Building
The average build time is approximately 10 working days, depending on any additional services required. Lead times may vary based on the season, as well as the size and design of your garden room project.
“The team at The Garden Room & Annex Company did a fantastic job building our new annexe. It looks great and all the guys involved in the build were a pleasure to be around. They were friendly, polite and most importantly went the extra mile to make sure everything was perfect. Would highly recommend!”
Claire R, Worthing
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