Self-made Container House Small Caravan

When making a self-made container house small caravan, it is necessary to comprehensively consider factors such as design, materials, functional layout, legality, and cost. The following summarizes key points from different cases:

1. Basic Structure and Material Selection
Container house small caravans usually take truck chassis as the foundation and expand functions by adding independent containers. The container materials are diverse, including galvanized steel sheets, thermal-break aluminum doors and windows, and pure wooden boards. For example, one case uses a metal keel welded frame covered with galvanized steel sheets on the outside and decorated with environmentally friendly boards inside, balancing strength and lightweight requirements. Another case uses pure wood to build the container, with alloy frames wrapped around the edges to enhance durability. Material selection needs to balance cost, weight, and thermal insulation performance. Metal structures are more suitable for long-term use, while wooden structures are lower in cost but require attention to anti-corrosion treatment.

2. Functional Layout and Equipment Configuration
The core functional areas include sleeping areas, kitchen areas, bathroom areas, and storage spaces. Sleeping areas can meet the needs of multiple people resting through electric hammocks, sofa-combined beds, or fixed beds. For example, one case uses a circular sofa and an electric hammock to accommodate four people sleeping. The kitchen area needs to be equipped with basic appliances such as induction cookers, sinks, and refrigerators. Some cases adopt a segmented kitchen design to improve space utilization. The bathroom area usually has a simplified configuration, mainly consisting of floor drains, portable toilets, and shower heads, emphasizing dry-wet separation and ventilation. Storage space is realized through hanging cabinets, under-bed storage compartments, and multi-layer drawers. Equipment selection needs to consider the water and electricity load. For example, 10 kWh of electricity and a 100-liter freshwater tank can support 2-3 days of basic use.

3. Legality and Safety
The modification needs to comply with local traffic regulations. Some cases avoid legal risks through an "independent container design". For example, one factory uses the caravan container as an independent module. When not in use, it can be taken out with a forklift to restore the truck's cargo-carrying function, thus being recognized as a legal modification. Another case adopts modular kits, allowing users to choose the chassis model by themselves, but ensuring that the original vehicle seats are not removed or the vehicle's purpose is not changed. In terms of safety, it is necessary to focus on dealing with smoke exhaust and ventilation issues. For example, when installing a coal stove, a chimney needs to be connected and an exhaust fan equipped to avoid carbon monoxide accumulation. The circuit design needs to comply with vehicle standards to prevent overloading and causing fires.

4. Cost and DIY Feasibility
The cost range varies widely, from a 26,600-yuan ultra-small camper van to a 300,000-yuan heavy-duty truck caravan. Low-cost solutions usually adopt simple containers and basic equipment. For example, one three-wheeled caravan only needs to modify the rear compartment side panels, add ventilation windows, and a single bed. High-cost solutions involve customized frames, high-end appliances, and complex water and electricity systems. For example, one heavy-duty truck caravan costs nearly 300,000 yuan, including the cost of learning skills such as welding and carpentry. The feasibility of DIY depends on personal skills and tool conditions. Modular kits (such as VanLab) can lower the technical threshold, and users only need to assemble them to complete the modification.