Prefabricated House Cost Composition Table

The cost of a prefabricated house mainly consists of direct costs, indirect costs, profits, and taxes, with direct costs being the main part. The specific breakdown is as follows:

Direct Costs
Direct costs cover labor, materials, machinery, and measure expenses, forming the core of the prefabricated house cost.

1. Expenses Related to Prefabricated Components: This includes production, transportation, and installation costs of prefabricated components. For example, in the material cost of prefabricated panels, a solid cement panel costs approximately 110 yuan/㎡, a hollow cement panel costs about 80 yuan/㎡, and high-end steel structure/concrete prefabricated panels can range from 200 to 600 yuan/㎡. Transportation costs need to consider the size, weight, and distance of the components, while installation costs depend on lifting equipment and manual operations.
2. Construction Measure Expenses: Compared to traditional cast-in-place methods, prefabricated houses can reduce costs for scaffolding and formwork support since some structures are integrated during factory prefabrication of the components. However, it should be noted that costs for steel structure corrosion protection and fire prevention may increase, such as the application of fire-resistant coatings or fire-resistant panels.
3. Maintenance System Expenses: Prefabricated components can achieve integrated thermal insulation and decoration during the production stage, eliminating the need for additional plastering and thermal insulation work on-site, thus reducing these costs. For example, traditional cast-in-place methods require separate plastering and thermal insulation layer construction, while prefabricated houses complete this directly through component integration.

Indirect Costs
Indirect costs include enterprise management fees and statutory fees. Enterprise management fees cover salaries for management personnel, office expenses, etc., while statutory fees involve social insurance premiums, housing provident funds, etc. These costs are usually calculated based on the project scale or a proportion of direct costs and have little relation to the factory-based production mode of prefabricated components.

Other Costs

1. Foundation and Substructure Engineering: This accounts for 10%-15% of the total construction cost and is significantly influenced by geological conditions. For example, soft soil foundations require pile foundation reinforcement, costing more than ordinary silty clay foundations; rocky foundations require blasting or special excavation, further increasing costs.
2. Construction Costs: Prefabricated houses rely on lifting equipment, resulting in relatively high labor costs, especially during the installation of steel structure/concrete prefabricated panels. Additionally, machinery usage fees (such as crane rentals) also account for a certain proportion.

Explanation of Cost Differences
The cost differences between prefabricated houses and traditional cast-in-place methods mainly lie in the component-related expenses and maintenance system expenses within direct costs. The former may increase initial investment due to factory-based production but can partially offset costs by reducing on-site wet work and shortening the construction period; the latter significantly reduces later maintenance costs due to integrated thermal insulation and decoration.