For the combination of how easy it is to relief, the sheer size of it especially when considering the systemic fallout it would hold in regional banking, and who it most hit's ie elite class; for this "holy trinity" I am 97% certain it will NOT happen. 

I built my team of sub-contractors and now I focus primarily on mid-sized multi-family.

I left the flip flop to show the size.

Whether or not it is worth doing a cost segregation study on it or not depends primarily on your purchase price, the size of each unit and your tax rate.

Curious if anyone could provide rough cost to use when estimating for A/C replacement in Phoenix and Tucson Metros, ideally 3-ton, 4-ton, 5-ton replacement costs to account for varying home sizes.

In regards to bedrooms, the county requires a permit and they will determine your occupancy based on the BR size (1 person for the first 70 s.f. then you can add additional person for each 50 s.f. after), parking, and parcel size.

But unless you know and understand the reasoning behind it, and are sure the reasoning applies to you, opening up all these LLCs because "everybody does that" or "that's what my real estate bible told me to do" is a pretty silly way to run a business.Taxes and, I assume, legal issues, are never cookie cutter, one-size-fits-all issues. 

@Tyson Meek There are reasonably priced excellent engineering-based cost seg studies for properties the sizes of yours.

The EV charger is listed as an amenity on our Airbnb listing.Cost $1800 for Tesla charger installation.One interesting insight is that we couldn't get 100% charge ability from the charger because our house's electrical was sized for 225 amps (the electrician sized it for the house's electrical requirements at the time, the charger was an add-on afterwards). 

There are a lot of different ways to calculate the rental income portion of the ratio, so it is best to send your lender the property address you are interested in so they can do some calculations for you.