By 2020, you will not be able to repair your R-22 system because the price of R-22 will be extremely expensive and supply decreases.The current HVAC standard coolant, r410a, costs about $3-$8 per pound.

Since you have multiple houses, you can buy cylinders of it on ebay, if you think supplying it yourself to the technician will be cheaper overall. 

Additionally those that can wait it out should have supply and demand on their side as many VR owners have already converted to LTRs thus reducing the supply once the flood gates open.

The demand seems to be higher than the supply = rising prices.

There will be costs even if your "tenant" is supplying the tiny house. 

Many retail stores and services are seeing a sharp decline in demand or are totally closed, while others are adapting customer experiences and distribution channels to conform to new norms around social distancing, and a few are capitalizing on emergent needs, such as for consumer staples like packaged food, household cleaners, medication and home office supplies.

This past track recordM along with future indicators (vacancy, population growth, quality and diversity of jobs, supply, etc.), places the investment as perceived low risk and high return.  

When doing a top-down market analysis, you want to look at fundamental supply and demand characteristics: healthy and growing population base, demographic trends, diversified employment sectors (so if one industry goes down–like the auto industry in Detroit–the whole town doesn't go down with it), talented and educated workforce.

Huge sports town, lots of pubs, people love to say they are from Boston, and most will pay a premium to be there.

3)Did lenders supply a loan for rehab to take place or was this something saved for?