Its fairly affordable and obtainable so I dont see the harm in experimenting on its relevancy to my real estate career.

I noticed that ListSource gives a lot of individual unit owner info in their MF lists when I search for buildings with 2-100 units. 

Water Stains in Sub-Floor under toilet (Structure safety and mold/fungal growth concerns) Discolorization of floor joist due to harmful form of fungal growth Door hinge on bottom crawlspace Floor Deflection, sag in master bathroom and bedroom b) The girder in the middle right end of the crawlspace and the floor joists at the rear of the crawlspace have been notched in several locations to install plumbing lines and the headers that were installed where a joist would have been cut in two to install the drain line under the shower stall in the master bathroom are not properly attached and exhibited signs of failure.

Is the median income trending up, etc.Once you start getting into individual neighborhoods you probably want to look at crime statistics, foreclosure rates, etc.Is it possible to find a deal in a well established market using the 1% rule?

Thing is you've got to buy duplexes as individual deals with individual residential mortgages.

I like helping individuals that want the relationship long term and need help in the process.I think residential will get watered down faster with AI programs because it is not usually as complex as commercial real estate.

.- Depending on size of the property, scope of the work, and how much rehab you're willing to do, you can always consider individually submetering each unit.

This just a lucky break for me however that the seller ended up being an very ethical individual. 

Next I would try to find a smaller area within the zip code and then start searching for individual properties.If I can’t find anything in California, I would start looking elsewhere using the same steps.In your opinion, is that a good approach?

Also your individual goals.