Although illegally，informal property houses in rural collective lands are developed rapidly because of urbanization and suburbanization.As a part of urban housing in reality，the informal property houses play a role in security for urban livelihood housing.For the object of united urban-rural real estate market，rational measures should be taken to regulate and lead the informal property houses to the legal road and to take the part of economically suitable houses，which is useful both to medium and low income citizens and suburban farmers.