From a leaky roof to a backyard jungle, it was a crash course in problem-solving and patience.I bought it for $145,000, powered through the chaos with a hard money loan, and sold it for $180,000.

Is there a defined definintion of occupany that mandates a set amount of days per month that I must sleep under the roof of my primary residence?

You need a true network and boots on the ground to find this. 

I’ll also amortize large items like roof over 20 yrs, and then add $100/mo/unit for general repairs.

Our 8-unit buildings have one roof, one foundation, and one structure to take care of.

On a boots-on tour, I'd NEVER say "no, stay away, just send me your $ and hope it comes out well" that's shady. 

Prices are through the roof, Insurance cost have skyrocketed, maintenance cost are up a lot, taxes.

I like good neighborhoods, with sloped tile roofs, stucco siding, built in the last 20 years. 90% of Las Vegas SMF checks none of these boxes. 

The roof is over the next door properties property line.

There are more duplicity costs with SFH - more roofs, more yards, etc - but I have had and managed both and homes are better in my market.