1, affordable housing should also pay property maintenance funds. In the implementation opinion, it is no longer just commercial housing that needs to deposit property maintenance funds, but also affordable housing, price-limited housing, rental housing and public rental housing. 2. Divided into three categories: first, newly-built commercial housing (including affordable housing and price-limited commercial housing) that need to obtain pre-sale permit (current sales record certificate); The second is the single-owner house that needs to be divided and transferred; Third, resettlement houses, low-rent houses and public rental houses that need to be collected (demolished) for the completion and acceptance of housing construction projects.