Streamline Garden Room Range

Fast to Build, Built to Last. Installed by our team or available as self-build kits.

Looking for a Garden Room that’s quick, durable and budget-friendly? Our Streamline Garden Room Range is the perfect solution — fully installed by our team, or supplied as a self-build kit you can put up in as little as 24 hours. Either way, no lengthy build times and no specialist trades required.

Why choose Streamline?

Fully installed or supply-only – we build it for you, or you build it yourself.
Fast – self-builds go up in as little as 24 hours, no specialist trades needed.
Warm all year – QuadCore™ insulated SIP panels in walls, roof and floor.
Ready to go – anthracite doors and windows included as standard.
Made your way – bespoke options such as extra windows and doors on request.

Each room is built using advanced QuadCore™ Insulated SIP panels, providing exceptional thermal performance in the walls, roof, and floor. The exterior is finished with high-quality corrugated metal cladding and a durable painted coating to create a structurally sound composite panel – delivering a sleek, modern look that lasts.

Whether you’re dreaming of a home office, creative studio, gym, or just extra space, there’s a model in our range for every lifestyle and garden.

Supply-Only or Fully Installed – The Choice Is Yours

Available in 10 sizes, our Streamline Garden Rooms offer unbeatable speed and value. Every building includes everything needed to create a weatherproof, fully insulated structure that’s built to last. Choose full installation by our team for a hassle-free finish, or take a supply-only kit and build it yourself — self-builds go up in as little as 24 hours (we recommend 2 or more handy DIY’ers per structure). Bespoke options such as additional windows and doors are available on request.

Compact and peaceful, the Rydal is ideal for a small home office, reading nook or garden retreat. At 3.3m x 2.2m (7.26m²) it slots neatly into most gardens without dominating the space.

Available supply-only for a fast self-assembly, or fully installed by our team. Kits are delivered with instructions and the fixings needed (you’ll need a drill & driver for the door frames). We can also create bespoke builds — additional windows, doors and layout changes to suit your space. Contact us for an installation or bespoke quote.

A little extra width makes the Elterwater a versatile choice for a home office or hobby room. Measuring 4.4m x 2.2m (9.68m²), it keeps a slim footprint while giving you more usable floor space.

The square 3.3m x 3.3m (10.89m²) footprint of the Coniston makes it a well-balanced studio, office or quiet snug that feels roomier than its compact dimensions suggest.

A popular all-rounder at 4.4m x 3.3m (14.52m²), the Grasmere comfortably suits a home office, creative studio or a relaxed garden lounge with room to spare.

With 5.5m x 3.3m (18.15m²) to play with, the Buttermere is a generous space for a garden gym, studio or a combined office and chill-out room.

The long 6.6m x 3.3m (21.78m²) layout of the Derwentwater lends itself to zoned spaces — think office at one end and gym or lounge at the other.

A wide, open 5.5m x 4.4m (24.2m²) room, the Ullswater makes an impressive garden studio, treatment room or spacious home office with a real sense of light and space.

One of our larger rooms at 6.6m x 4.4m (29.04m²), the Windermere is perfect for a multi-use garden room — office, gym and social space all under one roof.

The Bassenthwaite stretches to 7.7m x 3.3m (25.41m²), offering a long, flexible layout that works beautifully as a studio, garden bar or home working space with distinct zones.

Our largest Streamline room, the Thirlmere gives you an expansive 7.7m x 5.5m (42.35m²) — ideal for an annexe-style space, large studio, gym or an open-plan garden room for the whole family.

Real Project: A Swim Spa Garden Room

Say goodbye to timber frames and hello to modern innovation. Our fully insulated garden rooms are crafted using QuadCore™ panel technology, giving you a robust, energy-efficient structure that’s warm in winter, cool in summer—and quick to install.

When a customer came to us looking for a garden room to house their new swim spa, they were initially considering a timber building. However, knowing the high levels of humidity that come with any type of spa, we advised against timber due to potential long-term issues—and instead recommended our Swift range of buildings, designed to handle moisture-rich environments with ease.

Just a month later, our team completed the installation of their new spa enclosure in a single day. We finished it off with luxury LVT flooring, creating a sleek, durable interior. With their swim spa now just steps from the house, there’s no need to travel in bad weather to enjoy a swim. They can relax and unwind any time they like — and the kids are loving it too!

Streamline Garden Room Range

Why choose Streamline?

Supply-Only or Fully Installed – The Choice Is Yours

Real Project: A Swim Spa Garden Room

Any Questions? Ask away!