Do preventative maintenance on appliances and air conditioners.

@Michael MaloneyHow confident are you that the Air BnB laws in your area are not going to change. 

Our dryer vent was venting directly into the siding that the HOA had installed on the side of our building years ago causing moisture to build under the house and the dryer air was all trapped and had nowhere to go so it got clogged really bad and broke my year old dryer.

Coming from an HVAC background I've got a few bones to pick with foam:#1 makes house too tight/not enough air exchange from outside.

With that, Hawaii has become very strict/restricted on allowing Air BnB, VRBO, or other short-term rentals.

Flipping houses, Buying duplexes, Air bnb, or the tons of other routes I could go down. 

@Jay HinrichsLove all the info you are putting out there, it's a breath of fresh air, specially for us sfh and mfh investors who's goal is to get into the development game.

I was notified 2 days ago they burned the house down (accidentally) with their air fryer.

Drapes also serve a roll in reducing heat loss or letting cold air in. 

Getting him some air time or newsprint might get the word out.