How many years does the average household stay in there house nowadays in America, 7-10 years?

With that said one of the main things I've seen is that no more than 2 unrelated people may live in the same house hold in a residential zone. so this holds me back to only being able to rent to one other person, leaving the other two bedrooms empty.

The industry accounts for as much as 30% of the country’s economic activity, and more than two-thirds of household wealth is tied up in real estate."

That’s because only 7% of households in the United States earn $250,000 per year1.

Evergrande, which is facing one of the country’s largest defaults as it wrestles with more than $300 billion of debt, has already missed coupon payments on dollar bonds twice last month.We had to do a double take when we saw this because these are absolutely terrifying numbers and are, to put it bluntly, scarier than Goldman's "worst case scenario"; what's worse this sudden collapse in China's property market is taking place before Evergrande has even defaultedAs such, any contagion from the ongoing turmoil sweeping China's heavily indebted property sector will impact not the banks, which are all state-owned entities and whose exposure to insolvent developers can easily be patched up by the state, but the property sector itself, which as Goldman recently calculated is worth $62 trillion making it the world's largest asset class, contributes a mind-boggling 29% of Chinese GDP (compared to 6.2% in the US) and represents 62% of household wealth. 

Unlike larger competitors American Homes 4 Rent and Invitation Homes, which focus on households earning more than $100,000 a year, Tricon tries to find houses to rent to people earning between $60,000 and $100,000.

There may or may not be a housing shortage if you take all available housing nationwide and compare it to the number of households nationwide.

Only 7% of renters prefer a townhome/ condo compared to 30% wanting SFR, and 51% prefer an apartment.  78% of renter households make less than $100,000.   67% of renters are on a 12-month (or longer) lease.So if you are looking for a long-term rental property, I would keep those variables in mind when deciding on a property.

If yes, what are some quality neighborhoods (low crime rate, higher avg. house hold income, proximity to public transport etc.) you recommend investigating?

Especially if you are traveling with folks outside your household.