(such as multi-family building, condominium, etc) Any advice welcome.

Work backwards from there and say okay I want 250/mo free cash flow from each property (use some of the calculations to give you a general idea of what your costs are, and cross reference those Median Household prices with places that generate the right rent numbers to make your search a little more specific.  

(See O.M.C. 8.22.030 B(2))Dwelling units exempt pursuant to the provisions of the “Costa-Hawkins Act” (see Ca.Civil Code § 1954.52; these exemptions generally apply to single family dwellings and condominiums).2 or 3 units on a single assessor's parcel when one of the units is occupied as the owner's principal residence for at least one year.NOTE: Exemptions from Measure EE (the "Just Cause for Evictions" law) are not the same as for the Rent Adjustment Law

I also obtained the age of 162 people, household income on 130, and the occupation of 83.  

But if it's a 3 unit building (and not condominium units), it's extremely difficult and takes a long time (if ever, to convert to condos).  

., it is a single-family unit or condominium);AND F.     

Sorry if this comes off as blunt, but...I wouldn't get into this type of situation with a family member, unless you're willing to risk the peace in your household. 

Also note: My credit is steadily going up, I will be at a 700 in no time, I don't have much of a savings, but I do make small deposits bi weekly to keep a trail that I CAN save, and no huge debt ( just a small secured CC ) aside from normal household expenses/bills.

Of those, four were located in a planned unit development or condominium project.

Condominium is a definition of ownership.