Very reliable to get the job done well and on time. 

Those two things are huge road blocks for me right now even though they should not be.You're definitely going to need a reliable real estate attorney and title agency - no avoiding this.  

Can anyone recommend a reliable, honest, and effective property manager, who doesn't mind a mix of properties, some on the lower end?

While appreciation will occur long term, over the short term it isn't so reliable of a thing.

We're a new-ish player in town that's matched >1,000 Denver homeowners and investors with reliable local contractors. 

I would say one theme is to look at the owner's needs (is it income, security, a place to live, tax advantages, taking over a problem, a reliable buyer who can make monthly payments, etc).

The only reliable way to determine cap rates are when closed sales are analyzed by a third party in a consistent manner. 

Very good example but let me say those estimates also depend on location.If the investor is a flipper and wants his ROI back sooner ,then the old saying is'location,location,location.That said, average good reliable construction in a productive area will lean more towards $95 to $110 a square foot.It would be great to pocket $40 k after all expenses but $25000 to $30000 will be more of reliable amount in a market where they are a ALOT of SFH for sell at the moment.Pricing the investment for a quick flip is crucial in 2016.

I would like to build a network of reliable and trustworthy individuals that are in any way shape or form involved in real estate - investors, agents, brokers, lenders, CPA's, tax attorney's, financial advisors, property managers, insurance agents etc...I currently have 1 rental property and my goal is to expand into a comprehensive portfolio in the Boulder, Denver and Summit County markets!

I am looking for a reliable general contractor in the Pittsburgh area for some rehab work.Any recommendations?