As @Zack Gerson mentioned...I'd also suggest you shop around for a lender to refinance you if you haven't already.

I have a rental by the base so it mostly gets air force people and another rental in the city, near the shopping areas.

I am by no means a pro at this, but I have read things from various sources and it's been brought up in different work shops as well.

Mostly apts on main st over the retail shops.

Great project there that was allegedly hard fought to get community acceptance, but now is widely hailed.If you're into tiny homes you can tour several of the manufacturing shops in town.

Do flipping folks have any recommendations for custom cabinetry shops in the Denver area?  

The trouble is that you probably need to take the old hinge pin with you to the hardware store so you can match it up, so the tenant doesn't have a door while you are shopping. 

I would choose a target neighborhood in my area to invest in, and I would learn the area frontways and backways, walking the streets, taking notes, printing up a big map and making notes on it, visiting the shops and stores, eating at the restaurants, learning my way around the municipal building of the place.

After I close on my commercial auto shops in Oct, I’ll be investigating this deeper.

They are actually starting to revitalize the down town with shops and everything.