Why Are Prefabricated Houses Cheaper?

There are several main reasons why prefabricated houses are cheaper:

Firstly, the cost of building materials is relatively low. The building materials for prefabricated houses are produced in advance in factories using standardized and large-scale production methods, which can significantly improve production efficiency. Factory production allows for better control over the procurement, processing, and inventory of raw materials, reducing waste and losses, and thus effectively controlling costs. In contrast, traditional construction methods involve on-site construction, where the procurement and processing of materials are often more scattered, making it difficult to achieve economies of scale and resulting in relatively high material costs.

Secondly, fast construction speed and a small proportion of labor costs. Most of the processes for prefabricated houses are completed in factories, such as the production of wall and floor components. On-site construction mainly involves the assembly and connection of these components, greatly shortening the construction period. Due to the short construction time, the proportion of labor costs in the total cost is relatively small. In contrast, the construction process of ordinary houses is complex and requires a large amount of on-site labor, from foundation construction to the erection of the main structure, and then to decoration. Each step requires human participation, and the long construction period results in a relatively large proportion of labor costs in the total cost. For example, when Chinese prefabricated houses are built in the United States, they have a significant advantage in labor costs compared to local construction. American construction workers are expensive, earning at least $200 a day, and skilled workers can earn $500 a day. Moreover, they do not work overtime. Building a house in the United States incurs labor and material costs of at least one million yuan, while Chinese prefabricated houses offer high cost-effectiveness.

Furthermore, the structure is relatively simple, and the design and construction difficulties are small. Prefabricated houses usually adopt standardized design and structural systems, with relatively simple structures, making design and construction less difficult and thus not resulting in high costs. In contrast, ordinary houses may have more complex design and structural requirements, such as unique architectural shapes and complex spatial layouts, which require more professional design and higher construction technical levels, thereby increasing design and construction costs.

Finally, the later maintenance costs may be lower. The structures and components of prefabricated houses are relatively fixed, making repair and replacement relatively easy and inexpensive. The maintenance of ordinary houses may involve more aspects, such as wall crack repair and roof waterproofing, resulting in higher costs.