Then reinvest the cash in a few smaller houses outside the city proper, buy a multifamily, or invest in a syndication. 

Looking for a little help with proper business formation, LLC structure, and liability coverage etc.Thank you for the help!

I guess it is possible that a joint blew open, if it wasn't properly secured.

Make a proper offer AND make sure you can perform (by having a buyer ready) and you won't have a problem.

During inspection, we found foundation issue on concrete slab house, water turned off so can’t check for any leak, can’t find sewer clean out, can’t check if toilets are draining properly.

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

A proper listing, even if the house is trashed, will find you a list of professional rehabbers (who will sometimes, but not always lowball), but also a list of buyers looking for a "fixer-upper". 

To answer your question regarding location- Since you are looking for easy access to mountains and a SFH with potential ADU, I would focus in Wheat Ridge and Arvada (just NW of Denver proper). 

I will say that as a left leaning person I used to believe that rent control could be fine if properly implemented, and most landlords opposition to it was strictly out of greed.

These businesses are doing better than break-even on day 1, are less than a 1.2 DSCR as-is, but have significant upside with proper management.