Luxury Garden Rooms in Brighton, Worthing, Lewes & Sussex

Stylish Spaces for Modern Living

At The Garden Room & Annex Company, we specialise in creating beautiful, functional spaces that blend seamlessly into modern life. Based in Sussex, we’ve spent decades crafting bespoke garden rooms, annexes and offices for clients across Brighton, Worthing, Lewes and the wider South-East. Our expertise lies in transforming underused garden space into something truly valuable.

Luxury garden rooms in the UK are no longer just an add-on. They’ve become a smart lifestyle choice. Whether you’re looking to work from home, entertain in style, or simply expand your living space, a well-designed garden room gives you flexibility, comfort and year-round usability.

Designed Around You

Every one of our projects begins with you. Our luxury garden rooms are not off-the-shelf solutions. They’re fully bespoke, tailored to your lifestyle, your property and your personal taste. Working closely with you, we will design something that fits perfectly into the setting while delivering exactly what you need, whether that’s a peaceful office, a family hangout, a gym, an art studio or even a self-contained living annex.

We’ve built hundreds of multipurpose garden rooms across Sussex, always finished to the highest standard. The result is a space that looks and feels like a natural extension of your home.

Built to Last

The Garden Room & Annex Compnay doesn’t cut corners. Every garden room is constructed using Structurally Insulated Panels (SIPs) for maximum durability and energy efficiency. These advanced materials mean our rooms stay warm in winter, cool in summer, and ready to use all year round. SIPs also allow for rapid construction, meaning we can build most garden rooms in just a few days. From initial groundworks to the final coat of paint, we handle it all.

You don’t need to juggle contractors or worry about unfinished jobs. Our garden rooms are fully finished, from foundations to flooring.

Stylish, Spacious Garden Rooms

Our belief is that a garden room should be more than functional. It should feel like a luxury experience. The Garden Room & Annex Company design team pays close attention to proportion, flow, lighting and texture, making sure each room has a strong aesthetic identity. With options for bi-fold or sliding glass doors, feature walls, premium finishes and integrated lighting, we create stylish and spacious garden rooms that instantly elevate your outdoor space.

And it’s not just about how it looks. A well-designed room gives you more usable space without the cost or stress of a full extension or loft conversion. It’s a smart way to add value to your home while upgrading your day-to-day life.

Multipurpose Living, Made Easy

Our customers use their garden rooms for everything from working and exercising to relaxing, creating and hosting. That’s the beauty of a multipurpose space. It works how you need it to.

Looking for a quiet garden office away from the house? Done. Need a creative studio with natural light? Easy. Want a private annex for visiting family or future rental income? We’ve got you covered. Luxury garden rooms in the UK are no longer just a trend, they’re part of how we live now. Flexible. Adaptable. Ready for whatever your day throws at you.

Local, Experienced, Trusted

We’re a Sussex-based company with over 45 years of combined experience. This is our home turf, and we know what works here, whether you’re tucked into the South Downs or on the coast in Worthing.

Over the years, we’ve refined our approach through hands-on experience and constant innovation. We work with some of the best designers, builders and carpenters in the industry to ensure that each room is not just built to spec, but built to last.

The Garden Room & Annex Company’s transparent pricing means no hidden extras, no surprises. What you see is what you get, and what you get is exceptional quality.

Complete Peace of Mind

From planning to final build, we’re with you every step of the way. We also offer something unique which is our after-care pledge. This is our long-term commitment to you. Because we believe that great service shouldn’t stop when the build is done.

Why Choose The Garden Room & Annex Company?

• Local experts with decades of experience

• Hundreds of completed builds across Sussex and the South-East

• Fully bespoke design for every client

• Fast, efficient construction using advanced SIP technology

• Transparent pricing with no hidden costs

• Stylish, spacious garden rooms that work all year round

• A dedicated team from start to finish

• Unique after-care pledge for complete confidence

Whether you’re in Brighton, Worthing, Lewes or anywhere in Sussex, we’re ready to help you unlock the potential of your garden with a luxury build that fits your life perfectly. Luxury garden rooms are more than an upgrade. They’re a transformation. They give you breathing room, headspace and flexibility. They future-proof your home.

Let’s build something brilliant.

Ready to talk about your garden room? Get in touch today and let’s make your vision real.