The margins are tight which increases risk.

Though I expect that to increase in the future when more ADUs are constructed.

Supply and Demand: When buyers outnumber sellers, prices and rents rise.Population Growth: Cities with significant and sustained population increases are more likely to see long-term rent growth.Job Stability and GrowthA property’s value is tied to the jobs in the area.

It’s worth considering the trade-offs between the stability of income and the increased oversight and hoops you'll have to jump through.

In beach markets, in ground pools tend to increase revenue 20% or so. 

We all know 'housing affordability' is one of the hottest political topics as of late but I'm not seeing any commitments to increase inventory. 

Who cares about lifetime interest costs, except to the extent you can easily lower them (refinance to a lower interest rate) to increase your cashflow.

Apparently, because rates increased here so astronomically in the last 2 years, the insurance industry believes their numbers are correct with the risk.If you have the correct coverage @Marc Shin, you should be covered (although you should also have budgeted or baked-in costs for minor issues/damage).

A coach makes sense if you are 23 and want to increase your skills enough to earn a living with the sport.

You already mentioned Mid term, which can be a great way to increase cash flow.