Hi @Zachary Carnahan, Denver living is just awesome! Congrats on your upcoming move! The points made above by @Maria Bakaj regarding HOAs are really key! Rentals in HOAs can be tricky, and the HOA may derail your intentions to rent altogether. Be sure that the HOA allows renters (check rent restriction in bylaws) and how involved the HOA be in your rental decisions - many HOAs require that rental applicants apply directly with them and may have high application fees or standards that may not be easily met by renters. You also want to know what percentage of owner-occupants vs renters the HOA requires, as that ratio may end up placing you in a 'waiting list' until your unit becomes eligible for rental (this could be years in some cases).
HOA reserves are really important too; condos often (not always) require minimum 10% down payment for financing (which is higher than your standard 5% down for owner-occupant Conventional loan). I learned about the importance of HOA reserves the hard way; if an HOA is low on reserves, you may end up having to dish out a much higher down payment. In my case for a condo I purchased in South Florida, I ended up having to put down 30% for down payment due to HOA not having reserves, and oh by the way I learned of this just about one week prior to going to the closing table. Fortunately, it was still a good deal and I had the money to do it at the time!
Finally, assessments... HOAs are like mini government entities and most of us don't think of government as well-managed organizations; by that logic, many HOAs also lack good management and can result in assessment after assessment. Think of these assessments as new taxes, and they can be as low as a few hundred dollars or several thousand dollars. On the bright side, existing assessments may provide a point of negotiation with the seller (though not as powerful in a hot sellers market like we seem to be in).
In general I'd encourage you to consider not purchasing in an HOA if your intention is 100% to make this property a rental. Having said that, there are advantages to such properties - perhaps the HOA has a pool, gym or other amenities that you could not obtain otherwise. In my case, the South Florida condo I purchased is waterfront with marina views! Condos can also make for 'easier to manage' properties as you're really only responsible for maintaining the interior (referred to as 'contents' in condo world) and windows. Rarely will you as an owner be responsible for replacing the roof, renovating siding or repairing sewer lines (though this is where those assessments may come into play).
Best of luck on your journey and we look forward to hearing more on your decision!