Open Space Between Container Houses

The handling of open spaces between container houses requires a comprehensive assessment based on land nature, approval procedures, and safety regulations. Occupying such spaces without approval may constitute unauthorized construction and must meet fire safety requirements.

I. Key Factors in Determining Unauthorized Construction

1. Land Nature and Approval Procedures
   If the open space is classified as construction land, placing containers requires obtaining legal permits such as a construction project planning permit. For agricultural land, conversion approval must be obtained in accordance with the law. Occupying open spaces to place containers without approval, whether for residential or commercial purposes, may be deemed unauthorized construction. For example, container houses investigated by Huli Urban Management were ordered to be demolished due to lack of approval.

2. Temporary Use and Compliance
   If the area allows temporary construction and the use of containers complies with the specified duration and temporary construction procedures have been obtained, it does not constitute unauthorized construction. However, note that temporary buildings that are not demolished after expiration or have their purposes changed (e.g., for commercial or residential use) may be deemed substantial unauthorized construction.

II. Safety Regulations and Hazard Identification

1. Fire Safety Requirements
   Container houses using flammable sandwich materials (e.g., polystyrene, polyurethane foam) pose fire hazards. Compliant practices involve using A-grade fire-resistant materials such as rock wool boards and fireproof cotton, ensuring heat and fire sources are kept away from the house, protecting electrical wires with conduits, and equipping with fire extinguishers. Additionally, container houses should maintain a minimum safety distance of 6 meters from each other to reduce the risk of fire spread.

2. Structural and Usage Restrictions
   If container houses are used for residential or commercial purposes, hardening the ground or constructing permanent foundations should be avoided, as this may be deemed a “substantial change in land use.” For example, container houses investigated in Jiading Xuhang Town were demolished for being rented out for residential use and having complete living facilities inside.

III. Suggestions for Compliant Use

1. Pre-consultation and Approval
   Before placing containers, consult with local planning and urban management departments to clarify land nature, usage duration, and purpose, and follow the procedures to obtain approval.

2. Regular Self-inspection and Rectification
   If container houses are used for temporary storage of agricultural supplies, tools, or other non-residential purposes, ensure that the arable layer is not damaged, the ground is not hardened, and public spaces are not occupied for extended periods.