Becoming a Realtor® is joining the local MLS and agreeing to abide by their rules and code of ethics. 

All County® professionals can help property owners from violating these laws and incurring costly fees and/or lost income."

I say the same with garage door openers, wash machine too.

There are numerous traditional and alternative inputs into credit models that are then using advanced data analytics and machine learning to drive credit decisions. 

Ultimately, it depends on the recovery rate of the water heater {gas or electric } and whether your washing machines are High Efficiency (HE) units.If you have 2 HE washers, then a 40-usg tank should be ample.  

My fourplex has a service that they service the washing machine/dryer and I collect a percentage based on the usage. 

If they had grease on the driveway you can charge to have that cleanedJunk removed from premisesBack rentUtilities owedBroken WindowsDish on the roof when the lease states no disk on the roof  (Dish generates holes in the roof which is a costly repair)Broken cupboardsCan't charge for cleaning the place after they leaveThe wash machine was dead due to the flood. 

I wasn't even thinking of the increased rent factor, but that alone might pay for the machine in a year or two, I would think.

They are small machines designed for the lower volume professional painter (prices usually in the $900-1200 range).  

That first investment needs to become your own personal "money machine", your own ATM.