Who needs the owner's permission to rent out Xiao Zhang's house?

What you want to ask is who needs the consent of the owner Xiao Zhang to change his residence into an apartment for rent? Local government, property management company.

1. local government: if you want to change your residence into an apartment, you need to apply to the local government and get permission.

2. Property management company: Rebuilding the house will affect the management and living environment of the whole building. If the house is located in a residential area or building with a property management company, the owner Xiao Zhang needs the consent of the property management company.