FORZA 4M x 3M Garden Room
Effortlessly stylish, highly functional, and designed for everyday use.
FORZA 4M x 3M
£22,740 Inc. VAT
£18,950 + VAT
The FORZA is our most popular garden room, offering a well-balanced 4m x 3m layout designed for comfortable, year-round use. With generous internal space that suits a wide range of needs, it’s an ideal choice for a garden office, studio, or flexible multi-purpose room that feels open without overwhelming the garden.
Large double-glazed doors and windows bring in natural light and create a strong connection to the outdoors, while full insulation throughout ensures consistent comfort in every season.
Your Versatile Space
With just under 12 square metres of internal floor space, the FORZA offers generous room for a wide range of uses while still sitting comfortably within the garden.
It works particularly well as a garden office, treatment room, studio, workshop, or creative space, but the layout is intentionally flexible, allowing you to adapt the cabin around how you want to use it, rather than the other way around.
Fully insulated throughout the floor, walls, and roof, FORZA is designed for comfortable, year-round use in every season.
A horizontal window comes as standard to bring in natural light, with the option to add a floor-to-ceiling vertical side window if you’d like to increase light further or tailor the layout to your space.
Every aspect of the FORZA garden room is carefully considered, from its proportions to the materials and finishes used throughout.
Large double-glazed openings at the front of the cabin allow natural light to flow into the space, creating a bright and welcoming interior with a strong connection to the outdoors. A fixed double-glazed window complements this, helping to balance light, privacy, and usability.
Subtle matte black spotlights come as standard, providing practical illumination while maintaining a clean, contemporary interior finish suitable for both work and relaxation.
Externally, FORZA is finished in Thermowood cladding, selected for its durability, stability, and attractive natural grain. Over time, the timber weathers naturally, allowing the cabin to sit comfortably within its surroundings.
The result is a well-resolved garden room where quality, comfort, and design work seamlessly together.
Attention to Detail
A Multitude of Uses
The FORZA garden room is designed to support a wide range of uses, allowing you to shape the space around how you want to live and work.
Our to-scale layout drawings show one possible configuration, combining a practical garden office with a relaxed seating area. These illustrations are intended to help visualise how the internal space can be arranged, rather than define how it must be used.
Whether you’re creating a focused workspace, a calm retreat, or a flexible room that balances work and relaxation, FORZA offers the adaptability to suit your needs, now and as they evolve over time.
Included as Standard
Your FORZA includes everything needed to create a spacious, fully insulated garden room designed for flexible year-round use:
Fully insulated SIPs structure
Plastered and painted interior
Premium LVT flooring
WiFi-controlled electric radiator
Double-glazed doors and windows
Internal lighting, external spotlights, and sockets
EPDM rubber roof
Professional installation
Waste removal
10-year structural warranty
For a full breakdown of standard inclusions, visit our What’s Included in a Backyard Cabin? page.
To learn more about our construction methods, materials, insulation, and build process, visit our Garden Room Design & Build Information page.
What’s Not Included
To keep pricing flexible depending on your specific garden and project requirements, the following are typically excluded from the base cabin price:
Final electrical connection from your property to the cabin
Ground screw foundations if required
Optional Upgrades
+ £1900: Ground screws supply and install.
+ £700: Opening double glazed window.
+ £700: Integral blinds on bi-fold doors.
+ £150: Custom coloured bi-fold door.
+ £1800: Air conditioning unit. Hot and cold.
+ £700: Matte black cladding.
+ £1950: Ply Lined interior finish.
+ £3000: Soundproofing.
• Additional window: Price on request
• Buster and Punch lighting and electrical details: Price on request.
• Extended, raised decking area: Price on request.
• Full electrical installation: Price on request.
Exploring Cabin Characteristics
For full details on how our cabins are designed and built, visit our Information page, where we explain our construction methods, materials, and overall approach in more detail. This provides a clear overview of what goes into every Backyard Cabin and how we create high-quality, versatile garden rooms designed for year-round use.
FORZA 4m x 3m
Start Your Project
Site suitability guidance
Installation timelines
Optional upgrade advice
Direct support from our small team
Whether you already know which cabin is right for you or would like help comparing options, we’re happy to talk you through the next steps.
FAQs
Do I need planning permission for the FORZA garden room?
1
In most cases, no. The FORZA is designed under 2.5m in height to fall within permitted development guidelines, meaning planning permission is typically not required.
How long does it take to install a 4m x 3m garden room?
2
Installation is typically completed within around two weeks once the base is prepared, depending on site access and conditions.
Is the FORZA garden room suitable for year-round use?
3
Yes. The FORZA is built using fully insulated SIPs construction, ensuring it remains warm in winter and comfortable throughout the year.
What is the FORZA garden room best suited for?
4
The FORZA offers more internal space than the NEO, making it ideal for a spacious home office, creative studio, or multi-use garden room where flexibility is important.