1. Property: Class II affordable housing is an administrative allocation housing for low-income people, and commercial housing is an ordinary housing built by developers and sold to all groups.
2. Supporting policies: the purchase of second-class affordable housing can enjoy the policy; Commercial housing does not have these preferential policies.
3. Transaction cost: 3% of the transaction price of the second-class affordable housing needs to pay the land transfer fee, but the commercial housing can be sold normally.