Quality Warranty Period of Container Houses

The quality warranty period for container houses varies depending on the type. Integrated container houses have a longer warranty period, while the warranty period for container-type mobile houses is typically 1 to 5 years.

Integrated Container Houses (within the scope of housing construction projects)

Integrated container houses fall within the scope of housing construction projects, and their quality warranty period is determined in accordance with Article 7 of the "Measures for the Quality Warranty of Housing Construction Projects (2000 Edition)" and Article 40 of the "Regulations on the Quality Management of Construction Projects."

• Foundation and main structure works: The warranty period is the reasonable service life specified in the design documents for the project. For example, if the design service life for a general civil building is 50 or 70 years, then the warranty period for this part is the corresponding number of years. This is because the foundation and main structure are the core parts of the building, playing a decisive role in its safety and stability, and thus require a longer warranty period to ensure quality.
• Roof waterproofing works, bathrooms, rooms, and exterior walls with waterproofing requirements: The warranty period is 5 years. These areas are prone to leakage problems, which affect the normal use and living experience of the building, so a relatively long warranty period is set.
• Heating and cooling systems: The warranty period is 2 heating and cooling seasons. This takes into account the operating characteristics and service cycles of heating and cooling systems to ensure their stable operation under normal use conditions.
• Electrical pipelines, water supply and drainage pipelines, equipment installation, and decoration works: The warranty period is 2 years. These works are also important in the use of the building, and a 2-year warranty period can provide a certain level of quality assurance.
• Other projects: The warranty period is agreed upon by the employer and the contractor and should be clearly specified in the purchase contract. The warranty period starts from the date of completion acceptance.

Container-Type Mobile Houses

The warranty period for container-type mobile houses is typically between 1 and 5 years, with the specific duration influenced by factors such as the manufacturer, product material, usage environment, and maintenance conditions. Common warranty periods on the market include 1 year, 2 years, 3 years, and 5 years, with some high-end or custom-made products even offering longer warranty periods. For example, Sichuan Aishangguizu Container Co., Ltd. stipulates the following project warranty periods: 12 months for the main structure of the house; 1 year for roof waterproofing works and exterior wall leakage prevention; and 1 year for additional installations (doors, windows, eaves, etc.). The quality warranty period starts from the date of house acceptance upon signature.