Prefabricated Building Overview

Prefabricated buildings are constructed by industrially producing building components and assembling them on-site, also known as prefabricated assembled buildings or modular buildings. Their core feature is the manufacturing of building components (such as beams, slabs, walls, columns, etc.) in factories, which are then transported to the site for assembly, similar to a “building block” construction model. The following analysis covers technical types, advantages, application scenarios, and development history:

Technical Types and Systems
The technical systems of prefabricated buildings include prefabricated concrete structures, steel structures, as well as panel-assembled, box-assembled, and frame-assembled types. Among them, modular buildings represent a higher level of integration, breaking down the structure into independent modules (such as ceilings, floors, and plumbing systems) that are prefabricated in factories and then assembled on-site. For example, the Shenzhen affordable housing project uses concrete modules for assembly, the Nanjing Jindi Yufang project employs a prestressed prefabricated concrete assembled integral frame structure system, and the Weisu Space Capsule combines an aluminum alloy shell with seismic-resistant steel structures, capable of withstanding magnitude 8 earthquakes.

Core Advantages

1. Short Construction Period: The construction cycle can be reduced by over 60%. For instance, the Shenzhen affordable housing project was shortened from the traditional 2.5-3 years to 1 year, and in a U.S. container house case, production took 30 days, transportation 1 month, and assembly just 1 day.
2. Quality Control: Factories use automated production lines, controlling errors to the millimeter level, significantly improving construction precision.
3. Environmental Protection and Energy Efficiency: Reduces on-site noise, dust, and construction waste. A case study from a Fujian industrial base shows a reduction in construction waste by over 70%.
4. Low Cost: In overseas cases, a 70-square-meter fully furnished house (including bedroom, kitchen, and bathroom) costs approximately 200,000 RMB, significantly lower than local traditional construction costs.

Application Scenarios and Cases
Prefabricated buildings are widely used both domestically and internationally. In overseas markets, China's exports increased from $1.472 billion in 2015 to $4.339 billion in 2025, with a growth rate of 45% in the first quarter of 2026. Domestically, the Shenzhen affordable housing project was assembled from 6,028 concrete modules, reducing on-site labor by about 50%; the Weisu Space Capsule is suitable for elderly care resorts or homestay scenarios.

Development History
China's prefabricated concrete technology began in the 1950s, influenced by the Soviet Union, and was applied in factories and residential buildings; it rapidly developed in the 1970s under policy support; stagnated in the mid-1980s due to cost and quality issues; and revived in the 21st century due to production efficiency and environmental advantages, with companies like Vanke developing prefabricated shear wall residential structural systems. Currently, prefabricated buildings have become a significant direction in the global construction industry, with market research firms predicting the global modular building market will exceed $142.8 billion by 2030.