A Stanford study revealed that over 75% of the ADUs built in San Jose between 2016 and 2020 did not have a permit and are therefore illegal housing units.The lengthy permitting process, high construction costs, and shortage of tradespeople are some of the factors motivating property owners and contractors to take on the risk of building, renting to tenants, and/or housing family & friends in an illegal unit.

I'm on the lookout for promising investment opportunities specific to multi family, 3 or 4 units with a good unit mix.

Do you cater to single family rentals? 

Basically, if we bought the duplex, we couldn't qualify for another loan that would let us buy another duplex or even a single family home. 

Plan is to start with a multifamily house, or a single family with an in-law suite in the back.

The key part to my opinion is that you have a single-family home with shared space, as opposed to a duplex or a two-level house which would be two separate "dwelling units."

I love college students because they are not nearly as picky as most families. 

Even the single family homes on the island have the 30 day minimum though I believe. 

One huge problem with Zillow is multi-family properties.  

When using SB9 to split a single family zoned lot into two lots there is an occupancy requirement of 3 years from the time of the approval of the urban lot split.