20ft Expandable Container House Overview
The 20ft expandable container house is our most popular model — balancing size, cost, and functionality for families, rental properties, and permanent homes. With double-wing expansion, it provides approximately 40m² of usable space while shipping as a standard 20ft container.
📐 Quick Specs
- Folded size: 6.0m (L) × 2.4m (W) × 2.5m (H)
- Expanded size (double-wing): 6.0m (L) × 6.4m (W) × 2.5m (H) — ~38.4m² interior
- With 30ft option: up to ~54m² total floor area
- Structure: Heavy-duty galvanized steel frame, Q235/Q345 grade
- Insulation: 75mm EPS/PU sandwich panels (upgradable to 100mm)
- Doors: Steel security door + sliding glass door(s)
- Windows: Double-glazed, aluminum frame, insect screens
- Electrical: Full pre-wiring, LED lights, switches, outlets, distribution box, RCD
- Plumbing: Complete bathroom pod + kitchen plumbing
- Floor loading: 2.0 kN/m²
- Wind load: 0.85 kN/m² (cyclone-rated to AS/NZS 1170.2 optional)
- Weight: ~4.5 tonnes (folded)
FOB → Landed Cost Breakdown
| Cost Component | 20ft Single-Wing | 20ft Double-Wing |
| FOB Price (China port) | $9,800 | $12,500 |
| Ocean Freight (varies) | $1,000–$4,500 | $1,000–$4,500 |
| Import Duty (3–15%) | $294–$1,470 | $375–$1,875 |
| Foundation (concrete slab) | $2,500–$3,500 | $3,000–$4,000 |
| Installation & Commissioning | $1,500–$2,500 | $2,000–$3,000 |
| Typical Landed Cost | $15,000–$22,000 | $19,000–$26,000 |
Best Uses
- Family home — 2-bedroom layout suitable for small families
- Granny flat — backyard independent living for elderly parents
- Rental property — Airbnb, holiday let, long-term rental income
- Construction camp — worker accommodation for 2–4 people
- Site office + accommodation — combined work and living space
Standard Layout (Double-Wing)
- 2 bedrooms (master with wardrobe, second bedroom/study)
- Full bathroom (shower, toilet, basin, mirror, water heater)
- Open kitchen with sink, hob, extractor, counter space
- Living/dining room with large windows on both sides
- Optional: separate laundry area, porch/veranda extension
Customization Options
- Layout modification: Change room sizes, add third bedroom, enlarge bathroom
- Interior finishes: Choose from standard, premium, or luxury grade
- External cladding: Color steel, wood grain panel, brick veneer, stone texture
- Roof options: Flat roof (standard), skillion roof, gable roof with overhang
- Climate packages: Arctic (100mm PU + thermal break), Tropical (reflective coating)
- Solar integration: Grid-tie or off-grid solar systems
- ADA compliance: Wider doors, accessible bathroom, ramps
Shipping & Delivery
20ft units ship folded, with 2 units per 40HQ container. Sea freight times:
- Australia: 15–20 days
- US West Coast: 25–30 days
- Caribbean / Central America: 30–40 days
- South America: 35–50 days
- Middle East: 20–25 days
- Europe: 35–45 days
Frequently Asked Questions
How many people can live in a 20ft expandable house?
Comfortably sleeps 2–4 people (2 bedrooms). The double-wing layout provides adequate space for a small family.
What foundation is required?
A concrete slab (100–150mm thick) with perimeter footings is standard. For temporary installations, concrete pads or steel screw piles can be used. We provide foundation drawings with every order.
Can it be connected to existing utilities?
Yes. Each unit has standard connection points for water supply, drainage, and electrical. Connection to local utilities is straightforward and can be done by a local plumber/electrician.
What is the lifespan?
With proper maintenance, the steel structure lasts 30+ years. Sandwich panels typically last 15–20 years and can be replaced. The original shipping container design is built for 20+ years of maritime use.
Get Your 20ft Expandable House Quote
Receive a detailed FOB price + full landed cost calculation for your specific destination port.
📞 +86 153-0318-4505 | 🏭 Fucheng, Hebei, China
We typically respond within 2 hours during business hours (GMT+8).
Frequently Asked Questions
How much does a 20ft expandable container house cost?
A 20ft expandable container house has a factory (FOB) price of approximately $8,500 for a standard specification. Delivered and installed, the all-in cost typically ranges from $13,000 to $20,000 depending on freight, import duty, foundation, and local site works.
How much space does a 20ft expandable container house provide?
The 20ft expandable model opens to roughly 20–28 m² (215–300 sq ft) of usable floor space — enough for a bedroom, bathroom, and a compact kitchen-living area. Ideal for a granny flat, home office, or site accommodation.
What is included in the standard specification?
The standard build includes a galvanized steel frame, wall and roof insulation, pre-wired electrical, LED lighting, switch sockets, a water inlet and drain system, and standard doors and windows. Kitchen and bathroom fit-outs are customizable options.
How long does it take to install?
Site installation takes 1–2 days with a mobile crane and a small crew. The unit arrives pre-finished from the factory; only foundation, utility hook-ups, and anchoring are done on site.
Do I need a building permit?
In most jurisdictions, a permanent installation requires approval from the local building authority. The factory provides structural documentation (steel grade, load test, welding certificates) to support the permit application. Check with your local council before starting.