Integrated Prefabricated Modular Housing

Integrated prefabricated modular housing is a type of modular building, representing a higher level of integration within prefabricated building systems. It achieves efficient construction through factory-prefabricated modules and on-site assembly.

Core Construction Modes and Processes

Integrated prefabricated modular housing divides buildings into independent modules (such as rooms and functional units). Structural, interior decoration, and equipment integration, including ceilings, walls, and waterproof layers, are completed in the factory before transportation to the site for assembly. For example, a public housing project in Shenzhen utilized 6,028 concrete modules to rapidly construct five nearly 100-meter-tall residential buildings using a “building block” approach. The construction period was shortened from the traditional 2.5 - 3 years to just 1 year, and on-site labor was reduced by approximately 50%.

Technical Types and Component Systems

Prefabricated buildings mainly fall into three categories:

1. Panel-based prefabrication: Using prefabricated wall panels and floor slabs as core components, this approach can expand usable floor area but has limited design flexibility.
2. Box-based prefabrication: By combining prefabricated functional units (such as bathrooms and kitchens), construction speed can be increased by 50% - 70%. However, this method requires higher transportation and lifting equipment capabilities.
3. Frame-based prefabrication: Using prefabricated beams, columns, and slabs to form a frame structure, this approach offers strong adaptability but requires on-site pouring of connection nodes. The technology covers both prefabricated concrete and steel structures, with components including prefabricated beams, slabs, walls, and columns. Some projects adopt prefabricated shear wall residential structural systems to enhance seismic performance.

Advantages and Application Scenarios

Compared to traditional construction methods, modular buildings offer significant advantages:

• Short construction period: Factory prefabrication and on-site construction occur simultaneously, reducing cross-operations.
• Controllable quality: Standardized production reduces human errors, ensuring more stable performance in waterproofing, sound insulation, and other aspects.
• Environmental protection and energy efficiency: On-site noise, dust, and construction waste are reduced, with material loss rates decreasing by approximately 30%.
• Convenient maintenance: Modules can be disassembled and replaced, facilitating later renovations and upgrades. Application scenarios include standardized projects with high demand, such as public housing, hotels, and schools, as well as overseas emergency housing markets. For example, in the first four months of 2026, the Guangzhou Customs District exported portable houses worth 1.4 billion yuan, a year-on-year increase of 38.1%, demonstrating the competitiveness of Chinese prefabricated housing in the international market.

Development History and Industry Trends

China's prefabricated concrete technology originated in the 1950s, initially used for factory and residential construction. It experienced a revival in the 21st century driven by environmental policies. Companies like Vanke have developed prefabricated shear wall residential structural systems, promoting technological standardization. In the future, with the application of BIM technology and intelligent equipment, prefabricated buildings will evolve toward higher integration and lower carbon emissions, becoming a key direction for the transformation and upgrading of the construction industry.