Prefabricated Panel Housing in Huzhou, Zhejiang
The renovation and handling of prefabricated panel housing in Huzhou, Zhejiang, adhere to national and local policies, focusing on classified treatment. Priority is given to demolishing dangerous buildings and those in high-risk areas, while encouraging residents to independently update their properties. Some new construction projects adopt prefabricated assembly technology.
I. Policy Planning and Handling Principles
According to the national '15th Five-Year Plan for Urban Renewal,' the governance and renovation of prefabricated panel housing have been included in the national five-year plan, with a clear requirement to renovate over 500,000 units (rooms), focusing on eliminating safety hazards in D-grade dangerous buildings. The Ministry of Housing and Urban-Rural Development emphasizes the principle of 'classified treatment,' avoiding a one-size-fits-all approach, and only implementing demolition or renovation for buildings that meet the conditions.
II. Three Types of Buildings Prioritized for Demolition
- D-Grade Dangerous Buildings: These are buildings whose load-bearing structures can no longer meet safety requirements, as identified by professional institutions, and are in a dangerous state overall. They are the top priority for policy handling.
- Buildings in High-Risk Areas: Prefabricated panel buildings located in earthquake-prone areas or high-risk geological disaster zones, even if they do not reach D-grade, will be prioritized for handling due to their extremely high risks.
- Over-Aged and Dilapidated Buildings: Prefabricated panel buildings over 40 years old that lack value for repair and reinforcement, with severely corroded pipelines and aged structures, where repairs cannot solve fundamental problems.
III. Resident-Led Renewal Model
Starting from 2026, the model of 'independent renewal and original demolition and reconstruction' will accelerate its implementation. The Ministry of Housing and Urban-Rural Development and the Ministry of Natural Resources have jointly clarified a unified national application threshold and approval process, allowing residents to promote renewal without relocating from their communities. Changcheng Jiaoyuan Community in Yuecheng District, Shaoxing, Zhejiang is a typical case: built in the early 1990s, the community has over 95% support from owners for renewal and has been included in the 2026 pilot project in Zhejiang Province. In July 2026, 273 households completed their contracts within 12 days, and the original 13 five-story buildings will be demolished and rebuilt into six 11-story buildings with elevators.
IV. Technological Applications in New Construction Projects in Huzhou
In the Yuyuan Zhongnan Jiuxiwan Project, Huzhou adopts prefabricated assembly technology for high-rise residential buildings in accordance with prefabricated building planning requirements, with a prefabrication rate of 20% and an assembly rate of 50%. The main prefabricated components include composite slabs, balcony slabs, stairs, and flues. The floor adopts a two-way slab calculation system, with composite slabs connected through post-cast strip joints. The pre-embedded wire box technology accurately locates electrical points, improving construction efficiency and building quality.
