Three refers to the residential quality guarantee, residential instructions and construction quality confirmation, one refers to the comprehensive acceptance certificate of real estate development and construction projects, and one refers to the completion acceptance record. Once the owner signs the relevant documents, it will be regarded as the recognition of the building quality.

Extended data

According to Articles 30, 3 1 and 32 of the Urban Planning Law of People's Republic of China (PRC) (Order of the President of the People's Republic of China [1989] No.23). "The location and layout of construction projects within a planned urban area must conform to urban planning.

When the design task book is submitted for approval, it must be accompanied by the site selection opinion of the competent department of city planning administration and "if it is necessary to apply for construction land within the city planning area, it must apply to the competent department of city planning administration for designation with the relevant documents approved by the state for construction projects. The competent department of city planning administration shall verify the location and boundaries of land, provide planning and design conditions, and issue planning permits for construction land.

After obtaining the permit for planning construction land, the construction unit or individual may apply to the land administration department of the local people's government at or above the county level for land use, and after the approval of the people's government at or above the county level, the land administration department will allocate land "and" build, expand and rebuild buildings, structures, roads, pipelines and other engineering facilities within the urban planning area ".

An application must be submitted to the competent department of city planning administration with the relevant approval documents, and the competent department of city planning administration will issue a planning permit for construction projects according to the planning and design requirements put forward by city planning. The construction unit or individual may apply for the commencement formalities only after obtaining the construction project planning permit and other relevant approval documents. "

Baidu Encyclopedia _ Three Certificates and One Book