Is It Illegal to Place Containers in Houses?
Placing containers that have been converted into houses without approval inside houses or public areas usually constitutes illegal construction. Here is a detailed analysis:

Containers Converted into Houses Are Illegal Structures
According to urban management law enforcement cases in many places and relevant laws and regulations, converting containers into houses (such as installing doors and windows, air conditioners, and connecting water and electricity) without approval from relevant departments, enabling them to have residential or usage functions, is of the same nature as constructing houses without a permit and is considered illegal construction. For example, the modified container purchased by a resident in Miaozhong Village, Miaozhen Town, Chongming District, was clearly informed by law enforcement officers to be illegal construction; the owner of a restaurant in Lvxiang Town, Jinshan District, who placed a modified container behind the house as temporary housing for employees, was also identified as illegal construction.
Approval Required for Placing Containers in Public Areas
If containers are placed in public areas (such as roads and squares), even if they have not been converted into houses, they may still be considered illegal due to the illegal occupation of public space. For example, during a patrol, the Comprehensive Administrative Law Enforcement Team in Changhai Road Subdistrict found that a container converted into a house and placed on the sidewalk not only涉嫌 (this Chinese word means 'is suspected of' and there's no perfect equivalent in this context, but for smoothness, we can just say 'was suspected of') illegal construction but also occupied the road, affecting pedestrian traffic and posing fire safety hazards.
Special Case: Unmodified Containers
If containers have not been converted into houses and are only used as temporary containers for storing items, and do not occupy public space or affect the rights and interests of others, they usually do not constitute illegal structures. However, it should be noted that even if unmodified, if placed in public areas, they still need to obtain legal approval or go through the filing process. For example, some people believe that placing an unmodified container on the roof of one's own house does not constitute illegal construction because it is only a movable metal component, not a building.




