Also, I am assuming since you house hacked that you only did 5% down, which then increases your mortgage payments compared to 25% down buyers.

Buyers usually want to purchase on today’s value while sellers often want to use future potential of the property (“current rents are below market” or “room to build an additional property”, etc) to increase the purchase price or likelihood of a sale.

They find properties and approach Sellers and secure a price, then they seek out an end Buyer (you) and sell it to you at a higher price. 

The successful wholesalers are the ones that are direct with the seller and have done an analysis on the deal to show it can be a successful investment (always double check with your own)totally agree, I would add the don't act sketchy and present their available homes in a consistent/professional manner to buyers. 

You can't show the home to potential buyers.

Sometimes occupants still live there and eviction is not easy, and I have even heard a story once that the yakuza are involved in the construction and real estate business and exorted money from buyers through occupants in these properties. 

Have the co-op take out a loan for 60% of building value, then charge buyers 20% of value in cash for each unit. 

We also see that too, but there's also more Buyers at the smaller price points.

We have always reminded him that we're buyers and it's worked!

Would love any input you would have, especially from Canada, but anyone really.I have helped dozens of buyers and sellers in these communities and can speak from both a Realtor and investor perspective, but not an owners view 5.