There are many laws and regulations in real estate, which always makes you more equipped when you know what to do. 

Have they replaced your HVAC or other equipment?  

I would like to get my real estate license so that I am better equipped for my OWN personal real estate investing.

@Ben Leybovich My goal of 100 units at $250 net monthly income per month is just something that I aspire to own one day primarily because it would equip me with enough capital to purchase/develop larger multi-units.

Otherwise payment in full when finished and all clean up and equipment is gone.Otherwise he could file a lien on your property. 

Picking up the equipment is a hassle, returning the equipment is a hassle, doing the floor is a hassle.In addition you buy what you finish, in other words you have 0 warranty on the floors.

Equipment?

Hint: if tenant cuts water in half, pool equip stops running, $$$$ garden burns up, and water features stop working.

I haul equipment and run a crane for a portable mining operations company.

(With caution, if they ask, offer the next tenant a partial / $25-50/mo discount every month he's willing to do it himself with your/his equipment.