China Builds 26-Story Modular Tower in Five Days, 100 Workers

This blog post examines Broad Group Holon’s rapid, modular high-rise engineering feat: a fully finished 26-story residential tower in Xiangyin County, Hunan. The tower was assembled in five days from factory-built stainless-steel modules.

It highlights the technology and manufacturing workflow. The project could influence global housing strategies, especially regarding speed, resilience, and relocatability.

Project snapshot: a rapid, modular high-rise

The tower uses prefabricated stainless-steel modules bolted together on-site. This process eliminates traditional on-site concrete pours, welding, and lengthy masonry work.

The result is a complete living environment delivered much faster than typical high-rise construction. The project achieved 14,000 square meters of living space and 208 furnished apartments across 26 stories.

All of this was made possible with a factory-first workflow. This approach challenges conventional timelines in high-rise development.

Scale and outcomes

• 26-story residential tower assembled in five days
• 14,000 square meters of living space
• 208 furnished apartments
• 12 m × 3 m × 2.4 m factory-built modules
• No on-site concrete pours, welding, or lengthy masonry work
• Each module arrives complete with wiring, air-conditioning piping, interior finishes, four-paned heat-blocking windows, insulated walls, and an energy-recovery ventilation system

Fabrication and workflow

Broad Group reports a highly streamlined production line. One module is completed every 21 minutes.

The factory-built units are designed for rapid on-site assembly. Standardized module sizes and bolted connections bypass many conventional construction steps while maintaining integrated building services and finishes.

The structural system uses a patented stainless-steel sandwich approach called B-CORE. This system was chosen for corrosion resistance and ductility, which can improve seismic performance.

This factory-to-field workflow enables the five-day assembly. The result is a fully finished interior environment.

Engineering and systems: a stainless-steel solution

The project uses a fully integrated, factory-finished module system. Each unit arrives with essential building services already installed and tested.

This reduces field labor and coordination challenges on-site. The stainless-steel B-CORE structure is designed to resist deterioration and support rapid assembly.

Four-paned heat-blocking windows, insulated walls, and a dedicated energy-recovery ventilation system are included. The modules provide a controlled indoor environment from installation.

The living spaces minimize on-site trades and dependencies. Occupant comfort and energy performance are prioritized.

Core technical advantages

• Corrosion resistance and ductility from the stainless-steel sandwich system
• Enhanced seismic performance through bolted connections and modular continuity
• Potential longevity claims of 1,000+ years, tied to material durability, though verification remains a topic for future study

Relocatable design and utilities

The bolted construction enables dismantling, transport, and reassembly elsewhere. This gives large residential buildings a relocatable character.

This capability could support adaptive reuse and rapid deployment in different regions. Residents only need to bring portable appliances, as the building integrates a potable water filtration system.

This level of in-building utility integration supports a self-contained, off-site prefabrication approach. It reduces construction risk and complexity.

Relocation-ready features

• Bolted stainless-steel modules enabling dismantling and reassembly
• Integrated water-filtration system for potable tap water
• Container-dimensioned modules designed for easy transport

Global potential and next deployments

Broad Group is marketing the system internationally. Planned projects include locations in the United States, the Philippines, and the United Arab Emirates.

This shows growing interest in scalable, quick-build housing solutions.

Planned international deployments

• United States: Ohio, Texas, California
• Philippines
• United Arab Emirates

Impact on architecture and construction practice

The stainless-steel modular approach could influence future high-rise practice if scalable and reproducible at height. The model emphasizes off-site fabrication, standardized interfaces, and rapid on-site assembly.

Precast-like quality and integrated systems are key features. This challenges traditional timelines and labor-intensive methods in urban housing delivery.

Practical implications

• Potential reductions in on-site labor and scheduling risk
• Streamlined supply chains around factory fabrication and module transport
• New considerations for fire safety, acoustics, and long-term maintenance in stainless-steel assemblies

Caveats and considerations

Several questions remain. These include how the 1,000-year claim would be verified, whether the system is scalable to taller towers, and how local building codes and regulations interact with this technology.

Conclusion

Broad Group’s 26-story, stainless-steel modular tower shows a bold direction in rapid, factory-built housing.

Its wafer-thin on-site schedules and completed interiors could influence future mass housing strategies.

The tower’s relocatable design may set new standards if it can adapt to different climates, codes, and markets.

 
Here is the source article for this story: While Buildings in London or New York Can Take Three Years to Complete, China Built a 26-Story Tower in Just Five Days With 100 Workers