What kind of tax classification code should second-hand houses choose?

Please refer to the following code:

50/KLOC-50 10000000000000000 Buildings refer to buildings such as houses, business buildings and office buildings.

501010000000000000 Residential houses include ordinary houses, senior apartments, villas and other houses. Houses, houses, apartments and villas

501010100000000 real estate development house (excluding housing reform house)

5010102000000000000 houses obtained by direct purchase, donation, investment, self-construction and repayment of debts.

5010 50 10 103000000000 housing reform In order to cooperate with the reform of the national housing system, enterprises and institutions sell houses at the cost price and standard price of housing reform.

5010199000000000 Other housing

50102000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 Commercial housing, office buildings, commercial shops, restaurants, hotels, shopping centers.

50102010000000000000 Commercial housing for real estate development developed by real estate enterprises.

50/KLOC-50 10202000000000000 Commercial premises obtained by direct purchase, donation, investment, self-construction and debt repayment.

50102990000000000 Other commercial premises

50199000000000000 Other buildings refer to buildings other than residential and commercial buildings, including industrial workshops, warehouses, office buildings, schools, churches, temples, etc. Office buildings, industrial workshops, workshops, warehouses, schools, churches and temples.