Xicheng Container Modular Housing

The Xicheng container modular housing project, represented by the renovation of Building 28 in Block 1, Sanlihe, Xicheng District, Beijing, showcases the innovative application and significant advantages of modular construction technology.

I. Technical Definition and Core Features

Modular housing (modular construction) involves the prefabrication of standardized spatial modules in factories, integrating building main structures, enclosure systems, equipment pipelines, and interior decoration processes. On-site assembly and connection are all that is required. Its core features include:

• Standardized Design: Uniform module dimensions and interfaces facilitate large-scale production and combination.
• Factory-Based Production: Over 90% of the processes are completed in factories. For example, in the renovation of Building 28 in Sanlihe, double floor slabs with special sound insulation pads and water spray tests were all conducted in factories to ensure quality control.
• Assembly-Based Construction: Efficient on-site assembly allows the Sanlihe project to be completed from foundation to封顶 (topping-out) in just 46 days, shortening the construction period by more than 50% compared to traditional buildings.

II. Performance Advantages and Application Effects

1. Sound Insulation and Leak Prevention:

   • The Sanlihe project adopts a double floor slab with sound insulation pad design, achieving an 80% sound insulation effect between floors and significantly improving living comfort.
   • Factory water spray tests and modular assembly cavity structures effectively solve leakage problems, adapting to the climatic characteristics of northern China.

2. Space Optimization and Property Rights Governance:

   • After renovation, the living area of the housing increases, and the layout of the units becomes more reasonable, meeting modern living needs.
   • Modular technology resolves governance challenges under complex property rights and reduces construction disturbances to residents' lives.

3. Environmental Protection and Energy Efficiency:

   • Factory-based production reduces on-site wet operations, lowering dust and noise pollution.
   • Modules can be disassembled and reassembled, with high material recycling rates, meeting green building standards.

III. Application Scenarios and Scalability

Modular construction technology has been widely applied in urban renewal, affordable housing, dormitories, hospitals, and other fields. For example:

• The Beijing Haidian District Dinghuisi North Plot Affordable Rental Housing Project (completed its first concrete module hoisting in May 2026) is the first concrete modular affordable housing project in Beijing, verifying the technology's adaptability to high-density urban construction.
• Modular construction technology is systematically going global, driving the industrialization of construction worldwide.

IV. Typical Case: Renovation of Building 28 in Sanlihe

Originally built in 1978 as a dilapidated building, the renovated project covers an area of approximately 3,382 square meters and includes six unit types. It is expected to be completed in February 2026. Its successful practice demonstrates that modular construction technology can efficiently address pain points such as construction period, quality, and environmental protection in old residential area renovations, providing a replicable solution for urban renewal.