The best part is there are so many options we could sit here and list them all day however, since you're young (close to the same age as me) I would focus on building a portfolio quickly.

It's a win-win, however most the tenants that take that option are low income and likely to default more quickly.

After realizing the fragile nature of his six-figure salary, he set out to replace his salary with passive income—as quickly as possible.

Then use that equity to be able to more quickly purchase properties, vs building up 20% down payment each time.

The third party leasing companies are able to leverage economies of scale/ bulk buying power on equipment / vertical integration to drive costs down such that they can install solar cheaply enough that they will be making money on the system very quickly if not immediately (by selling the tax credits to banks/investors/tax equity funds and by selling energy back to the grid at a premium) .

The area is turning over quickly. 

I made contact with owner and quickly did a walk through already. 

With all that said, mine was a total gut job, so if you're just updating stuff, and can get a project completed fairly quickly, the stress shouldn't be as much. 

I fix it as quickly as I can to the best of my ability but I am under no obligation to make their life perfect every minute of every day.

After title clearing, purchase of property, excess fees, your profit quickly shrinks to several thousand dollars.