The property is extremely mismanaged and the tenants are quite undesirable. 12 of the units are affordable housing tenants and 5 of them are on a master lease with this company who lets the homeless community use the units.

Too few details to answer (Of course this varies county by county, all questions could be answered by reading the (zoning)/building code and/or clarified with a visit to the county planning office).but some clarifications because: lots of things are "tiny homes" but what you describe small houses "on permanent foundations" needs to be clarified , tiny homes could be:-stick built, see below. check your county code/planning dept-stick built cabins/recreational, a specific zoning and potential occupancy/etc restrictions but worth looking into where the zoning allows for it -hud manufactured homes (smaller singlewide perhaps 400sq ft 600sq ft minimum)-non-hud park models (on axles), ansi standards- other "RV's" built on a chassis:  organizations, state agencies, etc - will certify factory built (or sometimes inspected professional built) tiny homes on chassis - to whatever standards ansi, riva, dot/ l&i?

The benefit is it can be sculpted to match the profile of difficult to find trim and can fix rotten patches of wood siding (up to a few inches in diameter) without pulling anything off the house.

It really comes down to the type of house and type of tenant...and the latter the PM does have some control over as they are the ones placing them in the rental).My PM also 'makes' money by charging the tenants $30 a month (might have increased) which they can opt out of.

I don't necessarily want to make billions of dollars I really just want enough to buy the house I've wanted since I was a kid and have enough to live comfortably the rest of my life. 

The realtor brought in a buyer who was going blind, and we outfitted the house to her specific needs with grab bars and other modifications.

Are they supposed to be waiting on the guy to do something about his shoddy work while their house is literally falling apart?

The realtor brought in a buyer who was going blind, and we outfitted the house to her specific needs with grab bars and other modifications.

I am curious to know if anyone has had any experience renting by the room on furnished finder, I am having a bit of trouble finding quality tenants for my house hack and I'm starting to consider furnishing some of the rooms and listing them on them on furnished finder.

Whole place (be it studio/1 bed/2 bed etc.) is at minimum going to be $2K since 76% of housing as a whole place is above the 2K mark. c.