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- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
- …
- Products
- Expandable House
- Flat Roof Expandable House
- Space Capsule
- Container House
- Outdoor Kitchen
- Apple Cabin
- Mobile Toilet
- Mobile Stage
- About PreFab
Astra F40 — The Premier 40ft Flat Roof Expandable Home
76㎡ of Contemporary Architecture and Spacious Family Living
- Massive 76㎡ Living Space: Our largest residential-scale solution, perfect for 3-bedroom layouts with a full-size kitchen and dining area.
- Sleek Flat Roof Aesthetic: A clean, modernist architectural profile that fits seamlessly into both urban and natural luxury settings.
- Advanced Thermal Envelope: Upgraded 100mm thick EPS insulated wing roofs for maximum climate control and energy efficiency.
- Optional Sloped Roof Upgrade: Enhance drainage and achieve a classic residential silhouette with our secondary sloped roof system.
- Starting from $19,800 USD
Why Astra F40?
The Ultimate Primary Residence
With 76㎡ (approx. 820 sq. ft.) of space, the F40 is a true home, offering the volume and comfort of traditional construction with modular speed.
Logistics Masterclass
Engineered to fit a complete 76㎡ home into a single 40HQ container, making it a globally accessible housing solution.
Industrial-Grade Durability
Hot-galvanized steel frame with electrostatic powder coating ensures a 20+ year lifespan and superior corrosion resistance.
Technical Specifications
Customizations for local building codes and extreme climates are available upon request.
Dimensions & Space
- External Dimensions (Open): 11800mm (L) x 6420mm (W) x 2450mm (H)
- External Dimensions (Folded): 11800mm (L) x 2250mm (W) x 2450mm (H)
- Internal Dimensions: 1440mm (L) x 6260mm (W) x 2210mm (H)
- Total Area: 76 ㎡
- Weight: Approx. 3.5–4.0 Tons
Structure & Materials
- Main Frame: Hot-dip galvanized steel with electrostatic spraying (Pure White finish).
- Wall Panels: 65mm EPS color steel composite panels (0.3mm double-sided steel).
- Main Roof: 50mm EPS composite board + 0.45mm corrugated steel veneer.
- Wing Roofs: Upgraded 100mm EPS insulation for maximum heat protection.
- Flooring: 18mm Bamboo glue board base + 4mm premium SPC stone plastic finish.
Openings & Hardware
- Entrance Door: High-security steel fire door (thermal break, aluminum options available).
- Windows: Aluminum alloy double-glazed sliding windows with superior soundproofing.
- Hinges: 130mm heavy-duty galvanized embedded hinges for precision folding.
Electrical & Systems
- Standard: Pre-installed CE/UL/SAA compliant electrical systems.
- Capacity: Integrated 12KW system with LED lighting and international sockets.
- Utilities: Pre-wired and pre-plumbed for immediate "Plug-and-Play" site connection.
Kitchen & Bathroom
- Bathroom: Fully integrated wet/dry separation layout with smart toilet, vanity, and shower.
- Layouts: Optimized for 3-bedroom family configurations or expansive 2-bedroom luxury suites
Layouts & Vision

Frequently Asked Questions
What are the advantages of the 40ft flat roof model?
The F40 provides a sleek, modern architectural look and ensures a consistent internal ceiling height across the massive 76㎡ space, which is ideal for large family living.
How is the F40 shipped?
One complete F40 unit fits into a single 40ft HQ container. This makes it incredibly efficient to ship an entire 3-bedroom home to any major port in the world.
Can I really set this up in under 2 hours?
Yes. With a small team and a crane, the precision-engineered folding system allows for extremely rapid deployment compared to traditional building methods.
Why do you suggest an optional sloped roof?
While the flat roof is visually striking, the sloped roof upgrade is recommended for high-rainfall regions to ensure peak drainage and provide an extra layer of thermal insulation.
Is the E40/F40 suitable for cold climates?
Absolutely. We use 65mm wall panels and have upgraded the wing roofs to 100mm EPS to ensure the house remains warm and energy-efficient in winter.
Where can I learn more about shipping, import tax, and customs clearance?
If this is your first time importing prefab houses, please read our Prefab House Import & Shipping FAQ. It explains container loading, sea freight, import duty, local tax, customs clearance, local delivery, permits, and import documents.
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