Zhejiang Prefabricated Houses

Zhejiang boasts a diverse range of prefabricated houses, including container houses and fully assembled residential buildings, with innovative explorations in governance and renewal models. Details are as follows:

Container Houses: Hangzhou Yuanzhu Technology Co., Ltd. is a representative enterprise in this field, offering services such as customized design of container house villas and transformation of movable sunrooms. Its products are made of weathering steel, with the model jzx02 and specifications of 3*6, belonging to the category of mobile houses. The core advantages include:

• Modular Design: Using containers as basic modules, factory-standardized manufacturing replaces traditional engineering construction, resulting in a short manufacturing cycle, easy installation and disassembly, and low requirements for site engineering conditions.
• Superior Performance: The overall structure is safe and stable, with strong insulation, wind, snow, fire, and earthquake resistance capabilities. It can adapt to transportation methods such as highways, railways, and ships, making it mobile and convenient.
• Environmentally Friendly and Economical: It can be freely assembled and reused, with relatively low construction costs, aligning with the concept of energy conservation and environmental protection.

Fully Assembled Residential Buildings: The Jiangbei area in Ningbo adopts fully assembled technology, with prefabricated components all in panel structures connected by mechanical bolts. The internal sandwich insulation layer enhances thermal performance. Its notable feature is extremely high on-site installation efficiency, with the main structure able to be assembled within 7 days, significantly shortening the construction cycle, reducing on-site wet operations, and minimizing the impact on the environment.

Renewal and Governance Models:

• Yuecheng District, Shaoxing City: It has innovatively introduced a combined model of "self-initiated renewal + old house replacement with new ones", with homeowners as the main body and government guidance as the principle, achieving closed-loop and balanced project operation through area expansion of renewal blocks. Homeowners opting for in-situ renewal must account for more than 60%, while those opting for relocation can exchange for existing housing of equal value. The property rights of the houses are acquired by the implementing entity, balancing residents' needs with urban renewal benefits.
• Policy Support: The "15th Five-Year Plan for Urban Renewal" issued by the State Council in 2026 clearly states that C and D-grade dangerous housing and non-complete housing should be registered and dynamically updated, with priority given to demolishing D-grade dilapidated houses and supporting the self-initiated renewal and original-site reconstruction of old housing. Meanwhile, the inspection cycle for prefabricated multi-family residential buildings built more than 25 years ago has been shortened from 10 years to 5 years to strengthen safety control.

House Safety Grading Standards:

• Grade A and B: Structurally safe and suitable for continued occupation.
• Grade C: Locally dangerous, requiring reinforcement and repair.
• Grade D: Overall dangerous, requiring accelerated demolition and reconstruction.

The development of prefabricated houses in Zhejiang reflects the combination of technological innovation and policy guidance, meeting the demand for rapid construction while emphasizing safety and sustainability, providing diverse solutions for urban renewal.