Putting it all together: If I were starting over and looking for a house-hack in Denver, CO today, I'd be looking for a 4 bed / 3 bath property in the $500K - $600K range in an up and coming area (like Aurora near the medical campus).

Or, as Greg noted, the co-GP who raises money to be a part of the deal.  

I have 0 experience ground up construction loan program nationwide that does NOT require GC to sign anything, only provide proof of 3 C/O's (certificate of occupancy) over the last year I.e. built received occupancy permission now unit is on market or habitable. 700+ FICO I can get you 80%LTC loan to cost on the project on ground up construction for 1-4 units.

As a short-term rental property manager in Massachusetts, I charge a 20% co-hosting fee, which includes full-service management—guest communication, vendor coordination, cleaner oversight, and overall property operations.I've seen competitors charge anywhere from 10% to 30%, but lower-cost managers often cut corners, while higher-end services may not always justify the price.

In the Bigger Pockets free book, "Real Estate Rewind", as one of the 11 co-authors I wrote about one such Tax Sale purchase and made money but not enough money to warrant the risk involved.

Start as a co-host and work under a vacation rental management company in the area to learn the ropes.

Quote from @Alan Mills: Got an inspection objection back with something I’ve not seen on my other rehab’s (this is a Colorado property):“The seller agrees to have a licensed plumber install external sewer cleanouts per city code and scope the sewer line ensuring its integrity.”This was a full interior/gut rehab and almost everything is brand new.

So, you need at least $500,000 in liquid assets to become a passive investor in your Co-investing club?

Go on his website at obsidian capital co and you will find it.

A couple thoughts on your question:I tell our STR investors in Colorado that their main goal should be to set up the right way right out of the gate.