@Paul Duncan I'm not 100% sure but believe it is six months for conventional loans, however there are portfolio/commercial lenders in my market that I've done BRRRs with that don't require any seasoning. 

Friend of mine has been offered a portfolio of properties, 4 buildings, 3 of which have commercial units downstars, 25 total doors, appraised value $3.5M.

A lot of commercial mortgages are structured that way.  

I could imagine a commercial level LVP could handle a few keg parties.  

After some showings by the agent, the general concern from potential buyers is the location.The property is located near a commercial ave (Back to a vacant lot facing the commercial ave and a car dealer backyard in front of the street).

Some commercial lenders may let you do this via them placing a second mortgage on the duplex, but I've not attempted this so not sure what sort of appetite there is for this kind of loan.If you're going with a commercial lender, just ask them what they can do and they'll tell you. 

Here are a couple rent comps that I see in the areahttps://www.zillow.com/homedetails/1872-Central-Pl...https://www.zillow.com/homes/for_rent/48718371_zpi...https://www.zillow.com/homes/for_rent/2088540393_z...Assuming:$1250  for the 2bd / 1 ba$1400 or the 2 bed / 1.75 ba5 or 7 year ARM  with a 25 year amort (commercial financing)25% down8% management feehttps://www.biggerpockets.com/calculators/shared/3...This is also assuming there are no big upfront fixes.Probably explains why they've been on the market for 97 days with no changes in status (no pending inspection / no pending feasibility) with a price drop added in for good measure.

@Abel Teklu I wanted to get a traditional loan but since it's 4 different properties they cannot be bundled, thus, making it a commercial loan.

I personally like to have multiple units so your risk is mitigated a bit, and to be fair I am a multifamily guy not a commercial investor. 

I don't have too much experience with real estate (besides purchasing my primary residence) so I've really been enjoying the content here so far :) My goal in the near-term future is to buy & hold at least one commercial property somewhere in Northern California (probably not San Francisco due to insanely high costs).