Prefabricated House Construction

Prefabricated house construction is a building method that involves industrial production of building components and on-site assembly, offering significant advantages such as efficiency and environmental friendliness.

Construction Process

1. Factory-Prefabricated Components: Buildings are broken down into individual modules, such as ceilings, floors, walls, beams, slabs, and columns, which are manufactured in factories. The production process includes model nailing, steel bar placement, and cement pouring. For example, prefabricated slabs come in two types: solid and hollow. The hollow structure achieves lightweighting by reducing the non-load-bearing concrete.
2. On-Site Assembly: The prefabricated components are transported to the construction site and assembled using metal connectors, nail guns, and other tools. Workers move the prefabricated wall modules onto the platform, erect and secure them to the base slab, transforming the house from a flat layout to a three-dimensional structure. For roof construction, large triangular trusses are lifted and placed on the beams at the top of the walls.
3. Parallel Operations and Efficient Construction: Unlike the sequential construction on traditional sites, factories employ parallel operations combined with automated vertical warehouses and intelligent production lines, significantly shortening the construction period. For instance, the construction period for modular buildings can be reduced by over 60%.

Technical Types and Advantages

The main technologies include prefabricated concrete structures and steel structures, with components covering beams, slabs, walls, and columns. The advantages are evident:

• Shortened Construction Period: A certain affordable housing project reduced its completion and delivery time from 2.5 to 3 years to just 1 year through the assembly of 6,028 concrete modules.
• Reduced Pollution: Factory-based production minimizes dust, noise, and other pollution at construction sites.
• Consistent Quality: Standardized production in factories ensures stable component quality.
• Energy Efficiency and Environmental Protection: It reduces the generation of construction waste, aligning with the concept of green buildings.

Application Scenarios and Market

Prefabricated houses have been widely used in residential and affordable housing sectors and are in high demand overseas. According to customs data, in the first four months of 2026, the export value of movable houses in the Guangzhou Customs area reached 1.4 billion yuan, a year-on-year increase of 38.1%, indicating strong demand in the international market.