MY tiny brokerage does not recruit and never will as I am not competing for market share.  

"Bro investors" or whatever you want to call them make up a tiny sliver of the overall housing market. 

I'm sure it's happened many times over (and will continue to happen) that someone owes pennies in taxes relative to the value of the subjective property and the state takes it back over a tiny amount of unpaid property taxes. 

It is a tiny piece of Bidens proposed tax and spending increase.

When you increase the rent on multi-unit properties the value of the property increase 10 to 18 times the rent increase due to the Gross Multiplier.If you have a 100 unit building with a GRM of 13 (very average) and you increase all the rents by $100 you just made a profit of 100 units x $100 per month x 12 months  X GRM 13 = $$1,560,000 INSTANT increase in property value.First year profit = $1,560,000 + $300 / month cash flow x 100 units x 12 months = $360,000 = $1,920,000.If you increase the rents a tiny $50 every year your profit for the one building is $40,320,000You cannot even do that with SFR's because they don't increase in value when the rent is increased.profit just by + you earn an extra cash flow every year = $120,000.

He does all the legal filings for the LLC coordinates the tax return and K1s for the LLC, pays all the tiny amount of bills for the LLC and acts as the broker as well.

To answer your question specifically, look for loose or curling shingles, discoloration, particles stripping from the shingles and falling in the gutters (they look like tiny pebbles), streaking, or roof leaks inside (a very late sign). 

In another home my tenant refuses to pay the $200 / mo water bill,  thereby cancelling out my tiny cash flow profits and i have to pay it.

Ohio properties cash flow a tiny bit more for me.This is my personal experience with 6 properties, purely anecdotal

They take some technique or strategy that’s only workable or beneficial in a very tiny percentage of situations and generalize it as a major breakthrough.