I realize options may be limited here in the Phoenix area (only two I know of in Phoenix & Chandler with storefront units), but if anyone could point me in the right direction (on either (1) what to search for, or (2) any existing properties to look at), it would be much appreciated!

Some will allow you to roll in the existing private mortgage balance. 

We've used Hellosign (I'll keep calling them that because it's so much cooler of a name than Dropbox Sign) for 5+ years and it's a great service.Innago is "free", but they will bill your tenant for services. 

When I rehabbed the basement I tore out the existing drywall ceiling and added sound-proofing insulation followed by a 5/8" fire-rated drywall thinking that would be enough, but apparently the tenants can hear us walking, the dogs claws (we have hardwoods) as well as the TV.

I am looking to buy an existing RV, Boat, and Truck Storage business in the Tampa, St Pete, Clearwater Florida area.

The huge bonus of this property was it was coming with all existing materials inside including, condensers, lumber, electrical wiring, as well as pex and PVC for the plumbing.

Looks like your trying to find something that doesn't exist in your market.

I feel like my thoughts are scattered and need to speak to someone that can lead me in the right direction.Thank you for your time Arianna  have you looked at building instead of buying existing?

I am about to put an offer in on a tenant occupied property from the 1950s. I walked the property but it was full of tenants stuff so hard to see much of the walls and what not. Everything seemed functional. The owner...

In theory, the town could ask for proof that the use has existed prior to the zone change.