Modular Garden Rooms for all Outdoor Spaces
We offer quality garden rooms, offices, garden annexes and lawful developement lodges.
Explore the full range of finishes, cladding options, windows, doors and flooring available for your garden building. Everything is included as standard.
At The Green Room, we build fully insulated garden buildings designed for daily use. Whether you need a home office, a garden room or self-contained granny annexe, our buildings are warm, secure and made to last. We use high-quality SIPs panels and build everything with care, so your new space feels like part of your home, not just an add-on.
Unlike timber summer houses, our garden rooms, granny annexes and garden lodges are usable all year. They stay warm in winter and comfortable in summer, with proper heating, insulation and solid graconstruction. We offer a turnkey service, so from start to finish, every detail is taken care of.
Explore more about the benefits of Granny Annexes or Garden Lodges.
Whether you’re after a simple garden room, office or a fully fitted granny annexe with kitchen and bathroom, we’ll help you find the right option. You can view more about our full range of:
Ideal for elderly relatives, older children or multi-generational living. Each granny annexe is fully self-contained with options for kitchens, bathrooms and separate bedrooms. They’re warm, secure and add real value to your property.
Our garden lodges are designed as full-time living spaces and can be adapted to suit a wide range of uses. They’re perfect for long-term accommodation, guest use or even rental income.
A garden room gives you a modern, low-maintenance space right outside your back door. Use it as a hobby room, gym, games room or just a quiet retreat. All our garden rooms are fully insulated and finished inside and out.
If you work from home and need proper separation between work and home life, a garden office is a smart solution. Quick to install, low running costs and much easier than a home extension.
We only use SIPs (Structural Insulated Panels) for our garden buildings. These panels create a strong and energy-efficient structure that goes up quickly and lasts for decades. They keep heat in during winter and help prevent overheating in summer. Your new space will be quiet, dry and comfortable from the moment it’s installed.
The external roof and wall finishes are made from fire-rated, low maintenance materials. Doors and windows come with A-rated glazing and strong, weatherproof frames.
Our garden rooms are designed with an eaves height of 2.5 metres to comply with permitted development rules. So, in many cases planning permission is not needed.
However, if the garden room is used for sleeping or you are in a conservation area planning permission is required. Don’t worry we take care of the whole process.
This includes drawings, paperwork and managing the application with your local council.
All our garden buildings are fully fitted and ready to use, with no hidden extras. We include:
All our doors and windows come fitted with A-rated, energy-efficient double glazing to help keep your space warm in winter and cooler in summer. They’re secure, low maintenance and built to last.
A full-height glazed frontage brings in plenty of natural light and creates a bright, open feel. It includes a secure main entrance door that’s easy to access.
We use heavy-duty screw pile or concrete pad foundations for a stable, long-lasting base. These systems are approved by building control and suitable for most garden types.
Every interior is finished with plasterboard and a smooth skim coat. This gives a proper home-like finish, ready for you to decorate however you like.
Our buildings are constructed using SIPs panels throughout. This provides excellent insulation and creates a strong, warm, and quiet structure you can enjoy all year round.
Most garden room companies stick to 2.1m ceilings to avoid planning permission. Ours are 2.3m as standard, giving you a taller, brighter and more comfortable living space.
The roof is covered with a single piece of Firestone EPDM rubber. It’s waterproof, long lasting and topped with decorative gravel to improve drainage and extend its life.
We include outside LED lighting as standard, plus a double outdoor socket. These are ideal for garden lighting, tools or charging appliances.
The price includes all cabling and connection back to your home’s power supply, up to 30 metres. No hidden costs or need to arrange your own electrician
Each room comes with plenty of plug sockets, including USB charging points and modern dimmable LED downlights to suit how you use the space.
A slimline, wall-mounted electric radiator is included as standard. It comes with a 7-day timer and thermostat so you can set it to run just how you like.
We install rear guttering and a downpipe to keep water flowing away properly and protect your cladding and foundations.
Windows and doors are fitted with multi-point locking systems. Cladding options include long-lasting materials that don’t need painting or regular upkeep.
All electrical work is carried out by qualified installers and comes with Part P certification for complete peace of mind.
Every building comes with a full 10-year guarantee covering the structure, roof and major components, giving you long-term confidence in your investment.
There’s no need to deal with different contractors or worry about what’s included. Your quote covers the full build, electrical work, connection to your home and even internal fittings like radiators and lighting.
If you’re unsure what you need, or you’d like help planning the right space, our team is ready to help.
You can choose from a range of modern and natural finishes to suit your garden.
Looks like painted timber but lasts much longer. This option is fire resistant, rot-proof and low maintenance. Available in a wide range of colours.
Test out different exterior cladding colours in seconds with the online visualiser. Try the cladding visualiser now
Made from recycled materials and fully recyclable. It offers great insulation, a wood-look embossed texture and needs very little upkeep.
Naturally weather resistant with a warm reddish tone. If left untreated, it will gently fade to a soft grey over time.
We finish all our garden buildings with high-quality fascia, soffit and trim details for a smart, low-maintenance exterior. These components are made using embossed steel and durable PVC profiles, offering a strong weatherproof finish that lasts for years without the need for repainting or regular upkeep.
The embossed surface gives a subtle texture that looks clean and modern, while still blending well with natural surroundings.
All our garden buildings come with high-performance PVCu windows and doors as standard. They’re A-rated for energy efficiency, with low U-values that help keep the space warm in winter and cool in summer.
If you’re looking for a more eco-friendly option, we also offer frames made with high-recycled content, giving you a sustainable choice without compromising on performance.
We use the Quick-Step Impressive Ultra flooring range. These are durable laminate floors that look like real wood and come with a waterproof coating. Ideal for busy spaces, they’re easy to clean and built to last.
All options offer a realistic woodgrain texture and strong water resistance.
Test out different flooring colours in seconds with the online visualiser. Try the flooring visualiser now
This brochure from Tapco gives a full overview of their Classic Slate range, which we fit on all our pitched roof garden rooms, annexes and garden lodges. TapcoSlate Classic is a lightweight and durable alternative to natural slate. It has a textured surface and deckled edges that closely match traditional slate roofing, offering a clean, uniform look.
Made using environmentally conscious materials, TapcoSlate is built to last without the heavy weight or risk of cracking.
Download the brochure to explore the full range of colours and finishes.
We design and install bespoke granny annexes, garden lodges, offices, hobby rooms and garden rooms. All are made to order and tailored to your space and needs.
Yes. Every building is made using SIPs panels which offer high levels of insulation. They’re warm in winter, cool in summer and cost very little to run.
Yes. We offer a wide range of low-maintenance cladding options, from classic timber looks to modern fibre cement finishes. These are available in a variety of colours.
There’s no fixed size. Each building is custom-built, so whether you want a compact office or a two-bedroom annexe, we’ll design it to fit your garden and lifestyle.
Absolutely. All granny annexes come with a fully fitted kitchen and bathroom as standard. Garden rooms can also include these features if needed.
Yes, our granny annexes are built for full-time living. They are insulated, connected to mains utilities, and comply with building regulations. They include a bathroom, kitchen, living space and sleeping area, just like a small home.
All of our garden buildings come with a 10-year comprehensive guarantee. We also offer insurance-backed warranties through IWA, including deposit protection (subject to policy fees). This gives you full peace of mind from start to finish.
Our team of down-to-earth experts genuinely care about great garden spaces and excellent customer service. Whether you’re just starting to explore your options or ready to move forward with your project, we’re here to help.
