We have common laundry rooms for our apartment buildings that target this same low/middle tenant class. 

What they charge commonly comes out to $200/hour for labor.

Our 2nd floor units were equally adequate as all units open to a common hallway with two sets of stairs to the ground level at each end of that hallway. 

View report*This link comes directly from our calculators, based on information input by the member who posted.HARTFORD, CT490K LISTING PRICE150K - 25% DOWN PAYMENT PLUS EXTRA (JUST IN CASE) VIA HELOCCOVENTIONAL LOAN 30-YEAR AT 3.99% INTEREST RENT - $900 PER UNIT, COULD GO UP TO $1000 PER UNIT (AS PER RENTOMETER, ZILLOW, AND BIGGER POCKETS)UTILITIES - "GUESS-TIMATED" $500-$1000 (WATER AND COMMON AREAS-LIGHT)2 BED ROOM, 1 BATHINCLUSION OF PROPERTY MANAGEMENT

You move the funds to the top, or common LLC ownership, then back down. 

It is very common for commercial properties to have underground storage tanks or USTs.

It seems 6-beds are very common for RAL in CA.

Account ClosedThe debt-to-income ratio is commonly used when people are purchasing 1-4 unit properties where the underwriting is mostly performed on the borrower, not the property.

This one is now less common in California due to that W2/1099 law passed a few months before COVID hit, but back in the "before" days we would see this one ALL the time. 

If your accountant has first hand common knowledge of your area they can give specific advice about business aspects in your community.