That said, there is areas in explosive growth pattern, support by planned city development, and for the smarty-pant's who put int he work to know those plan's ("ehe-hum") appreciation becomes a mathematical item vs guess-work. 

I think if I wait long enough I'll get someone but there is definitely a pattern of it taking a long time for me to find tenants.I believe my property management advertises on both Zillow and Facebook.

I've noticed things still seem in a holding pattern.

Off grid cabin on Stevens Pass, Airbnb.See any patterns?

Vinyl tile not ceramic.linoleum HD counters not marble.

There's really a pattern to duplexes.

Offering a rent discount if they pay on or before the first instead of a late fee is a great idea, unless it is illegal.Seeing the pattern here?

It's a fairly common pattern.

There are countless factors that go into evaluating buildings, guaging the health of the area, calculating how long it will take to fill a vacancy, stress testing deals, projecting on the upsides as well as downside, dynamics of having an anchor tenant lease renewal on the horizon, guaging competition and surrounding vacancy, looking at future development of the area, understanding how local politics are affecting growth, traffic patterns etc. 

(A common thinking pattern that not only leads to analysis paralysis, but fear, depression, lack of confidence, anxiety..)