I bought three inexpensive ones at the hardware store and put them outside, at the front door, garage walk door, and basement door.Most of the upstairs has hardwood floors, so I provided a microfiber mop, a gallon of Zep hardwood floor cleaner, a quart spray bottle, and even a funnel to get the cleaner into the spray bottle. 

@Frank PatalanoFrank,There 12 2 bedroom and 6 3 bedroom and a store front which we are going to convert to a laundry for the building.

Like Marcia suggested but maybe add, “basement not warranted to remain dry; do not store anything of value.”

It has a store front, office, and two apartments currently.

Good advice above.empty garageuse leaf blower to quickly remove dirt dust etcpower washer surface cleaner would be huge helpthen some heavy duty degreaser. scrub agitate then let soak (not dry)then surface clean again and rinse.should be good to go.you can rent a powerwasher and surface cleaner from Home Depot. 4 hrs should do it if your close to store.

OOS is like a kid in a candy store I have to admit, being from the Bay Area.

I have a corporate tenant that has set each of their stores as a LLC, my lease is with the individual store LLC.  

@Milena Simsic You should visit the service counter in the Home Improvement section of a Home Depot store.

Sooooooo We would be better off investing in more NAPA stores instead.

When I am helping people I have them go to Home Depot, Menards, Lowe’s or whatever store they like and start learning what materials cost.