@Hongbing K. I was planning on using a VA Loan which will help with the cash on cash ROI due to no money down.
@Ying Gong's point is exactly why I am focusing primarily on cash flow.
I found this building on redfin and did a more complex analysis for practice. (Test Case)
Its listed for 499k and currently has tenants in each of the two units paying 1500 each (according to their info). Based on my simple analysis, paying360k for this property would net me 8.50% ROI and only $52.12 in cashflow per unit which to me would be a bare minimum based on ROI.
Closing costs are based on 2.15% for a VA loan with no money down.
So if I'm doing this correctly the seller would have to accept my seriously low ball offer on their property for me to make any sort of decent cash flow, correct? I understand @Dan's point that San Diego is likely not the best place for cash flow at the moment, and this is purely a theoretical analysis so that you all can double check me. Thanks again for all the responses.