He took out the old tub (and left it in the front yard with a sign that said "FREE SCRAP FU@#ING TAKE ME"), put in the new tub, not connected, just sitting there, replaced drains going from vanity, toilet and tub down into basement all the way to the clean out on the basement floor.  

I examined how the yard was kempt.  

As long as there is some form of storage, especially if house has a yard and tenant is responsible for mowing, a garage is preferred, even if tenants do not use it for vehicle.  

If I paid good money for a list and the first house had a sign in the yard... then the second.... then the third... then the fourth....

They also let 1 of my properties get an overgrown yard in spite of their lease saying it's the renter's responsibility and they'd be fined by the manager and have to pay the city any fines.  

Renting rooms allowed an easy way to maintain full income while also having full control of the entire yard.

Parking and yard use may need to be clearly spelled out. 

Call the city and make complaint about the couch, it is not lawn furniture and it is not permitted to be outside on a porch or in the yard.

There is a magazine here in Houston that specializes in all things FSBO (not just real estate) but most people who choose FSBO will only put a sign in their front yard. 

I checked it out further online and saw some mounted solar panels on the ground a few hundred yard behind the property.