At the intersection of modern design and practicality, our expandable home structure offers a game-changing solution for contemporary living. Whether you’re looking for a flexible home, a cozy vacation retreat, or a temporary office space, this prefabricated structure is engineered to meet your needs — efficiently and affordably.
Built to Last with Galvanized Steel
We construct each unit with high-grade galvanized steel, which offers exceptional strength and corrosion resistance. Our process coats every steel component with a protective zinc layer, effectively sealing the material against moisture and oxygen—the two main culprits behind rust. This ensures your granny flat withstands even harsh climates, lasts 15–20 years, and requires minimal maintenance.
Space-Efficient, Fully Prefabricated Design
We fully prefabricate our granny flats off-site, enabling quick and easy on-site assembly. Once delivered, the structure unfolds and locks into place with high-intensity bolts, significantly cutting setup time and labor costs. Whether you’re developing a remote resort or adding extra living quarters to your backyard, our setup process delivers unmatched simplicity.
Customization That Reflects Your Lifestyle
Your space should reflect your personality and preferences — that’s why we offer a wide range of customizable features:
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Wall Panels: Choose from EPS sandwich panels or metal pattern panels
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Doors & Windows: Aluminum or steel with optional double glazing
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Colors: Tailor the frame, walls, and roof to your aesthetic
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Optional Add-ons: Add balconies, roof designs, or even kitchen and bathroom fittings
Every unit is designed to be as unique as its owner.
How Does the Expandable Process Work?
Our expandable container homes are built by WeiFang Carterhouse a trusted manufacturer in the modular housing industry. Units are assembled in the factory — complete with pre-installed plumbing, electrical, kitchen, and bathroom systems — and then transported to the site, where they are unfolded and locked into place within hours.
Speak with one of our specialists to discover the best model and layout for your site and budget.
Key Features & Advantages
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Quick Assembly: Fast setup with high-strength bolt connections
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Robust Structure: Galvanized steel frame with a reinforced roof
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Prefabricated Systems: Pre-installed plumbing, electricity, kitchen, and bathroom
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Eco-Friendly: Minimal waste during setup, low-impact construction
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Waterproof & Fire-Resistant: Designed for safety and longevity
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Affordable: Cost-effective to buy, transport, and maintain
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Versatile Uses: Ideal for homes, offices, dorms, clinics, and storage
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Modern Appearance: Sleek design with customizable aesthetics
Expandable Granny Flat Specifications
| Category | Details |
|---|---|
| Size Options | Available in 20ft, 30ft, and 40ft versions with optional gable roof & patio |
| Folding Dimensions | 5900 / 9000 / 11800 × 2200 × 2480 mm |
| Flooring | 18mm plywood or fiber cement board base + 1.6mm PVC / optional SPC floor |
| Roof | 0.6mm galvanized steel top + 50mm EPS insulation |
| Walls | 50–75mm EPS sandwich panels or metal pattern panels (optional) |
| External Door | Aluminum sliding (W1500×H2000mm) or steel with handle lock |
| Internal Door | Steel door (700×2035mm) with handle lock |
| Windows | PVC/aluminum, 800×1100mm and 600×600mm, double-glazed, optional curtains |
| Electric System | CE/3C/UL standard: LED lights, switches, sockets, distribution box, wiring |
| Bathroom Fixtures | Ceramic toilet, basin, shower, mirror (optional) |
| Plumbing | PPR pipes for supply, PVC drain pipes (installed post-setup) |
| Kitchen Cabinet | L1800–2000 × W600 mm with stainless steel sink (optional) |
| Weight | 3500–6000 kg per unit |
A Versatile Solution for Every Environment
From rural sites to urban developments, expandable home structure adapt effortlessly. Their robust build and modern appeal make them ideal for:
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Backyard dwellings
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Temporary offices or clinics
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Vacation cabins
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Worker accommodations
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Emergency shelters
Conclusion
The expandable home structure offers the perfect mix of convenience, durability, and style. Designed for rapid deployment and long-term use, it stands out as an ideal choice for individuals and businesses seeking efficient, cost-effective living or working spaces.
Interested in learning more or placing an order? Contact our team today for a consultation and explore how our expandable solutions can fit your vision.
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