He still buys at a discount regardless of the strategy.

This followed after a 2X overflow of a tenant on a first floor that flooded his bathroom using a portable washing machine and flooded the basement apartment.

Like any other wholesale market, I "buy" a loan from a lender at a discount and mark it up for my profit.

As noted, commission are always negotiable as are brokerage options (full service to discount companies that pretty much just post it on the MLS and you work with all calls, offers, etc) and an agent can go over likely net out scenarios with you and give you an idea what you likely will be able to net after closing expenses and paying off the mortgage balance. 

Consider looking for a large single-family home with the ability to add more rooms or bathrooms, then rent it out by the room. 

Kitchen and bathrooms.

Also incrase your discounts on the platforms.

We finish a bathroom we can request an inspection, they come in inspect we get paid say 25%. 

Every time they smoked in their bathroom, they would turn on the vent to get the smoke out which in turn made my whole apartment smell like a ganja lab.

You can offer an incentive such a discount on rent if the pay online or via bank draft.