45 Container Renovated Houses

The cost, design considerations, and case references for renovating 45 container houses are as follows:

Cost Range

The cost of renovating container houses is significantly influenced by size, renovation complexity, material selection, and regional differences. The renovation cost for a single 40-foot container is approximately between $6,000 and $15,000 (approximately RMB 40,000 to 100,000). If high-end materials or complex designs (such as solar systems and ecological sewage treatment) are used, the cost may double. For example, the 45㎡ '8-Star Residence' in Auckland, New Zealand, was renovated from two containers and sold for NZ$700,000 (approximately RMB 3 million). Its high cost stems from an efficient energy system (2 kW solar panels, UPVC double-glazed windows), eco-friendly materials (low-volatile paint, recyclable wooden floors), and ecological sewage treatment (worm filtration system). In a domestic case, the total renovation cost for a 15㎡ forest cabin was approximately RMB 110,000, mainly including structural reinforcement, solar power supply, minimalist log-colored decoration, and foldable furniture.

Design Considerations

1. Spatial Layout: The internal space of containers is limited, necessitating the use of multifunctional furniture (such as foldable sofa beds and hidden storage cabinets) and vertical space utilization (such as wall cabinets and top-mounted lifting rods) to enhance practicality. For example, in the New Zealand case, storage cabinets were placed under the living room corner sofa, the office desk could be folded into a bed, and pull-down folding beds were installed on the walls to accommodate seven people.
2. Structural Reinforcement: Renovating containers requires ensuring structural stability, especially after stacking or cutting. Common methods include deep pile foundations, corner post reinforcement, and secondary reinforcement with wood or steel bars when opening windows on the sides.
3. Energy and Environmental Protection: Integrating solar panels, rainwater collection systems, and ecological sewage treatment can reduce long-term operating costs. For example, the New Zealand case achieved energy self-sufficiency and improved water efficiency through solar power, rainwater for laundry and toilet flushing, and worm filtration for sewage treatment.
4. Insulation and Ventilation: The metallic material of containers easily conducts heat, necessitating the use of spray foam plastic or wool insulation material to fill wall cavities and the installation of double-glazed windows and doors to reduce heat loss. Adding lifting rods or skylights on the roof can improve ventilation.

Case References

• '8-Star Residence' in Auckland, New Zealand: A 45㎡ house composed of a 40-foot and a 20-foot container, featuring an L-shaped layout with a living room, kitchen, bedroom, bathroom, office, and guest room. It has been certified for its efficient energy system and eco-friendly materials.
• Domestic 15㎡ Forest Cabin: Renovated from a single container, featuring an open design with a linear kitchen, foldable bedroom bed, and an outdoor patio, with a total cost of RMB 110,000.
• German Container Hotel: Constructed by stacking 78 old containers, retaining their rusty exterior walls, and paired with a nursery and patio furniture to achieve a fusion of industrial style and nature.