Modern Prefabricated Housing
Modern prefabricated housing is a form of construction that involves the industrial production of building components, which are then assembled on-site. It is also known as prefabricated assembly-type construction or modular construction. The core concept is to divide the building into independent modules, which are fully prefabricated in factories, including ceilings, floors, and water and electricity pipelines, and then transported to the site for assembly, similar to building with "LEGO blocks".
Main Types and Technical Coverage
Prefabricated housing is mainly divided into three categories: panel assembly, box assembly, and frame assembly. The technical systems include prefabricated concrete structures and steel structures, with components covering prefabricated products such as beams, panels, walls, and columns. For example, frame assembly supports buildings through prefabricated concrete or steel structural frames, while panel assembly primarily involves direct splicing of prefabricated wall panels and floor panels.
Core Advantages
- Short Construction Period: By adopting a parallel operation model and combining automated production lines with vertical warehouses, the construction period is reduced by more than 60% compared to traditional buildings. For instance, a public housing project in Shenzhen, Guangdong, had its construction period compressed from 2.5-3 years to 1 year.
- Controllable Quality: Produced to industrial standards, steel bar positioning accuracy reaches the millimeter level, with strict error control to avoid human deviations in on-site construction.
- Energy Efficiency and Environmental Protection: Factory-based production reduces on-site noise, dust, and construction waste. Fujian Province has achieved a reduction of over 70% in construction waste through policy support, alleviating traffic congestion issues.
- Flexible Maintenance: Modular design facilitates repair and renovation, with a wide range of application scenarios, including hotels, apartments, office buildings, hospitals, and data centers.
Development History
China's prefabricated concrete technology began in the 1950s, initially used for factory and residential construction. In the 1970s, driven by the policy of "three modernizations" in construction, technical systems such as large-panel structures and box structures were formed. The 1980s saw a stagnation due to cost and quality defects. After the 21st century, companies like Vanke developed prefabricated shear wall residential structural systems, promoting technological recovery.
Market Prospects
China's exports of prefabricated housing have grown significantly, with export value nearly tripling from 2015 to 2025. In the first quarter of 2026, the growth rate reached 45%, and in the first four months, export value in the Guangzhou Customs area increased by 38.1% year-on-year. It is predicted that the global modular construction market size will exceed $142.8 billion by 2030, indicating immense industry potential.
