Doesn't mean its a necessity to have it formed here but it is a fairly straight-forward process. 

Internet is almost a necessity nowadays. 

I also have decided that with our current income, it is a necessity that our first property have positive cash flow.

They have become good at marketing out of necessity as nobody invests with them twice.

If your PM is only on Zillow than you selected the wrong PM, they are classified as a BOOB...Shelter is a necessity of life and there for it will rent but it will often come down to price and/or condition.

In contrast, mid-term rentals are primarily driven by business necessity.

If you want this to be your business, having access to the most capital at the cheapest rate is a necessity.

The necessities are floors (LVP), windows and paint for the interior.

If values of real properties continue their long term increases, then owning more property even if it means having paid higher prices will turn out to be a winning strategy, provided the buyer is able to maintain ownership through periods of possible negative cash flow and or refinancing necessity. 

You are hard pressed to find anyone who will sell you food, fuel, or any other necessities of life for bitcoin.