My interest are house flipping and the BRRRR method.

Would that method work again?

Few left were broken, never cleaned.

The tenants have paid and if someone is thinking about moving out then an extra surcharge that hits if they aren't out in time for us to turn the place for a lucrative AirBNB short term rental can help massage the move out timing.That said with MTR we do not have the cleaning costs that eat up a lot of STR gross, and its lower hassle in some ways.  

So I offered to pay for the flight, if they returned a clean and empty house.

I’m just thinking I need to start at a clean slate.

Pic 36, metal under rooftop needs cleaning, storm cellar (?)

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

You can even "pay yourself" the cleaning fee if you want to and do the turnovers yourself. 

Options ive looked at are the Burrrr method, house hacking with fha living in the property for a year doing small upgrades and forcing appreciation refinance then rent and repeat that every year until we reach our goal.