What does it take to be a Resident PM in Sacramento

[Brad S.]

After investing in single family and small multi family for past 8 years I am looking into buying a 20+ unit apartment complex in Sacramento area. My initial thought was to self manage the building along with my partner, but then I learned that California law (and probably other states as well) requires a residential PM for apartments over 16 units. I do not know where to start, would appreciate any insight from experts on how they handle property management for small (over 16 but under 30) apartment buildings in California. Can a property management company handle this without dedicating a full time employee for my property (cost saving) and how much do they usually charge? Also if in future I decide to manage on my own how do I qualify to be a PM. Thanks you for reading.