Legal basis: Article 4 of the Measures for the Administration of Houses with Common Property Rights in Guangzhou: Purchase and Placement. The first is to clarify the subscription conditions. The purchaser is married without age limit, and single should be at least 30 years old; Household registration applicants have been registered in cities and towns in this city for 10 years, have obtained bachelor's degree or above from domestic institutions recognized by the state, and have obtained bachelor's degree or above from overseas institutions recognized by the state. They belong to the catalogue of middle and senior professional titles and professional qualifications published by our city, and belong to the catalogue of highly skilled personnel and jobs (occupations) in short supply. If they hold one of the valid Guangzhou green card holders, they can be exempted from household registration or household registration years. Before the purchase, the basic old-age insurance has been paid continuously in this city for 60 months, and the cumulative interruption and overdue situation does not exceed 6 months and the corresponding months are not counted; There are no houses, shops or office buildings in this city under the names of the buyers, their spouses and minor children; There is still a purchase opportunity of 1 after exiting the * * * property right house normally. The second is to clarify the priority conditions. Dual-employee families, graduate students have obtained doctoral and master's degrees, and have senior titles or professional qualifications announced by our city. The third is to clarify the purchase and placement procedures. When the supply of each batch of houses is less than the demand, the purchaser is determined by random lottery, and the waiting method is not adopted. The fourth is to clarify the payment and property registration methods. The fifth is to clarify the disposal method of surplus housing and avoid idle waste of housing.