Generally speaking, it may not be found, but the documents needed to buy a house can be found if the marriage is filed, but the specific marriage situation needs to go to the Civil Affairs Bureau.

If the parties or the real estate bureau want to retrieve the marriage registration files, they should go to the marriage registration office to retrieve them. According to Article 15 of the Regulations on Marriage Registration, the marriage registration authority shall establish marriage registration files. Marriage registration files should be kept for a long time. The specific management measures shall be formulated by the civil affairs department of the State Council in conjunction with the national archives management department.