There is something wrong with the window of the commercial house. What should I do if I find a property or a developer, how long is the warranty, and no one repairs it? Please let professionals know.

The first thing to know is whether the house is under warranty.

According to Article 40 of the Regulations on Quality Management of Construction Projects:

Under normal use conditions, the minimum warranty period of construction projects is:

(a) the reasonable service life of the building foundation engineering, foundation engineering and main structure engineering specified in the design documents;

(2) 5 years for roofing waterproof works, toilets, rooms and external walls with waterproof and anti-leakage requirements;

(3) The heating and cooling system consists of two heating periods and cooling periods;

(four) electrical pipelines, water supply and drainage pipelines, equipment installation and decoration works, for 2 years.

The warranty period of other projects shall be agreed by the employer and the contractor.

The warranty period of the construction project shall be calculated from the date when the project is completed and accepted.

To sum up, the warranty period of the window belongs to the decoration project is 2 years, and the warranty responsibility during the warranty period shall be the responsibility of the construction unit, and the warranty responsibility after the warranty period shall be the responsibility of the owner.