Warranty Period of Prefabricated Houses

The warranty period for prefabricated houses varies depending on the type and part of the project, and there is no uniform standard. Details are as follows:

1. Infrastructure and Main Structure Projects
According to relevant regulations, the warranty period for infrastructure projects, foundation projects of building construction, and main structure projects is the reasonable service life specified in the design documents. For example, if the design documents specify a reasonable service life of 50 years for the main structure, the warranty period is 50 years. This regulation is based on structural safety and durability requirements, ensuring that the core parts of the house remain stable during long-term use. It should be noted that some manufacturers may promise a longer period (such as 70 years) for specific products (such as prefabricated houses with reinforced concrete structures), but this is an additional commitment by the manufacturer and not a universal standard, and it should be subject to the contract agreement.

2. Waterproofing and Anti-leakage Projects
The warranty period for roof waterproofing projects, bathrooms, rooms, and exterior walls with waterproofing requirements is 5 years. These projects are easily affected by environmental factors (such as rain and humidity). The 5-year period aims to cover common problems such as material aging and construction defects, ensuring a dry living environment.

3. Heating and Cooling Systems
The warranty period for heating and cooling systems is 2 heating and cooling periods. Since such systems need to go through a complete usage cycle to expose problems (such as pipeline leakage and equipment failure), the setting of 2 periods ensures that problems are discovered and repaired within the warranty period.

4. Electrical, Plumbing, and Decoration Projects
The warranty period for electrical pipelines, water supply and drainage pipelines, equipment installation, and decoration projects is 2 years. These projects involve material performance and construction techniques, and the 2-year period can cover most problems related to material aging or installation defects.

5. Other Projects
For projects other than those explicitly specified above, the warranty period is agreed upon in the contract between the employer and the contractor. For example, non-core projects such as doors, windows, and exterior wall insulation may have their warranty periods determined through negotiation between the two parties.

Warranty Period Commencement Time
The warranty period for all projects starts from the date of completion acceptance and qualification, ensuring that the house has completed quality acceptance before delivery and avoiding disputes over the warranty period due to incomplete construction.

Summary
The warranty period for prefabricated houses varies depending on the type of project. The warranty period for core structures is the longest, followed by functional projects, and then decorative projects. Homebuyers should carefully read the contract terms, clarify the warranty period for each part and additional commitments by the manufacturer to protect their own rights and interests.