It’s about the same price as Vegas, perhaps a few percentage points higher per square foot.

I guess I’m confused as to the timeline of refinancing to ensure all boxes are checked before shooting myself in the foot.

Further, you avoid the potential of forgetting to refill it while tenants are away, having a single pipe freeze, and footing the bill for hydronic heat system busting open, flooding/ freezing the building (a not uncommon occurence). 

You will still need to get permits for that.BUT I caution you that you might not get the full price per sq. foot that you have in the main house. 

Putting your best foot forward is also important.

And two of those properties were for all-cash offers, which tends to skew the price-per-square-foot average down and implies that most of the people doing the buying in the area are other investors, not owner-occupants.  

If it's 4 units or less, they may use recently-sold properties as comps whose price-per-square-foot will be a bigger factor in valuing the property. 

The Arizona Republic is reporting Amazon will be adding new permanent jobs in Arizona.An excerpt:Amazon.com, which already employs more than 17,500 people in Arizona, plans to add another 3,000 permanent jobs in the state as it gears up for what could be a robust holiday shopping season.Amazon, which entered Arizona in 2007 with its first 300 employees, expects to open 11 new buildings in the state in 2020, said Lisa Guinn, a company spokeswoman.Amazon has operations in Phoenix, the West Valley, East Valley, Tucson and elsewhere.

Just throw a number out or by the foot or what?

I had someone that was going to manage one  3200 square-foot house  house for me near six flags and sea world area in San Antonio Texas.