I feel I know a property pretty well in a year or two but I still can get a wrinkle or two later on....I suspect the timing towards autopilot is variable and may depend on your resources and situation. 

Now since we were replacing all the plumbing in the bathroom... we replaced the kitchen waste and supply lines as well.

@Stephen Polizzi - Why do you want to deal with unknown variable.

I have a rent roll and 2015 expenses for maintenance, supplies, management, and utilities, which equal 63% of rent rollx12. 

Every unit needs to have their own hook ups and power supply.

•Brand new central HVAC•Brand new, upgraded electrical panel•All appliances less than 5 years old•TWO 40-gallon water heaters, less than 3 years old – enormous supply of hot water•Multiple rooms•Large brick fireplace and separate wood stove•Permanently installed ventilation/dehumidification system in full finished basement•Huge, 3-room paved shed, plus additional garden shed

Try going on line and see what university can supply you with a bachelors and the cost of that.

By the way, Entrut will supply you a list on non-recourse lenders.  

There is huge supply and more coming every day in that space with all the new complexes being constructed.

Supply and demand account for majority of the rising prices.