Ask if they have any issues that you may be able to address.I treat tenants as customers and have empathy for them - give them some leverage when they fall on hard times - but be firm and let them know that this is your business and you depend on the rent to keep your operation running.There are times when you can supply the tenants with up-grades, Frig, new stove micro wave - with those items supplied you'll be able to increase their rent a little.Treat your tenants with respect - thy are your customers and their rent pays your mortgages and gives you an opportunity for a wonderful cash flow and future retirment.Cheers

I used to work for a pharmacy software company.  

House and area are definitely C grade property.

House #1 is a brick house in a quiet neighborhood in MD (next to a round-about), with 4 on street parking spaces, and room in the back, only grade is out front. 

. :)My whole life I have known I was different than my classmates, and while my grades didn't struggle throughout middle and high school, my spirit sure did.

You could get the metal corner beads to rust from water vapor transmission thru the slab on grade.

The long term sustainability of the properties located in C+/B markets is much more valuable then saving money on the purchase up front and having a lower grade tenant and neighborhood.

You might have a vacancy for a month but the trade off is a better grade of tenant.

They are hands-off, institutional grade real estate investments, and they allow you the option to diversify.

(assuming this is a rental, some of the higher-grade commercial finishes would work better in high traffic areas and might keep you from having to screen and recoat as often as you would).