San Leandro Property Management Looking For Rule Of Thumb For How Much To Charge For Property Management Services?

Looking for rule of thumb for how much to charge for property management services? - san leandro property management

I have the opportunity to more than 20 residential units in 3 Bldgs drive in the neighborhood of Oakland, San Leandro for a friend. Responsibilities would be to collect the rent, accounting, filling of vacancies, the organization of maintenance and repair. I have no idea what charge. I think I want to pay something less than a property management to.