Can Prefabricated Panel Houses Be Built?

The construction of prefabricated panel houses has been explicitly prohibited in urban planning and construction land areas, and while there is no mandatory ban in rural areas, their use is not recommended due to safety hazards. Detailed analysis is as follows:

I. Policy Restrictions: Comprehensive Ban in Urban Areas

In 2023, relevant authorities clearly stipulated that the construction of buildings such as prefabricated panel houses that do not meet safety standards is prohibited within urban construction land areas. These types of buildings, due to issues such as short design lifespans (typically 30-50 years), weak earthquake resistance, and poor sound and thermal insulation performance, have gradually been phased out. The core goal of the policy is to promote the upgrading of the construction industry towards a safer and more durable direction, avoiding long-term safety hazards caused by building quality. For example, the assembled structure of prefabricated panel houses is prone to overall damage during earthquakes, while cast-in-place concrete or prefabricated buildings can significantly improve earthquake resistance through integral pouring or modular connections.

II. Safety Hazards: Structural Defects Difficult to Avoid

Prefabricated panel houses are assembled using prefabricated components, presenting two core issues:

1. Poor Integrity: Components are connected via bolts or cement mortar, which can lead to wall cracks, leakage, and even collapse risks due to over-service (beyond the design lifespan) after long-term use.
2. Weak Earthquake Resistance: The assembled structure is prone to dislocation under seismic waves, while cast-in-place concrete or steel-concrete modular structures can form an integral load-bearing system through continuous pouring or high-strength connectors, improving earthquake resistance by more than 50%.
   Rural self-built houses using prefabricated panels also face issues such as component detachment and severe leakage, especially in rainy or earthquake-prone areas, where safety hazards are more prominent.

III. Alternative Solutions: Cast-in-Place and Prefabricated Buildings Become Mainstream

1. Cast-in-Place Concrete Buildings: Formed through on-site pouring into an integral structure without assembled joints, they offer excellent earthquake resistance and waterproofing performance, with a lifespan of up to 70 years or more, making them a recommended option for rural self-built houses.
2. Prefabricated Buildings: Utilizing factory-prefabricated components (such as steel-concrete modules), they are assembled on-site, reducing construction time by 30% compared to traditional methods while ensuring integrity through high-strength connection technologies, suitable for urban renewal and rural new construction projects.

Conclusion: Due to policy restrictions and safety requirements in urban areas, the construction of prefabricated panel houses has been prohibited; in rural areas, although there is no mandatory ban, it is advisable to prioritize cast-in-place concrete or prefabricated buildings based on long-term safety considerations to avoid risks arising from building quality.