We help the city sometimes with sending out tax bills  I'm about 90% sure that the city outsources the billing to some place in Lancaster.

If you outsource your maintenance, the key will be having a good network of easy to deal with service people such as Handymen, Plumbers, Electricians etc. 

Even though I want to start off by self-managing my future property if possible, so I can gain experience and some extra income, the dream is to one day have enough properties that I would want to outsource the property management aspect.I was discounting the cash flow based on income not coming from my unit, yes.

We tried an outsource screening service once, but were unsatisfied with their process - which was designed for Class A tenants.With 3,000 units, an outsource company would probably promise to modify their processes to whatever you wanted that was legal.

This is NEVER something that should be outsourced, you should always run the numbers yourself and be able to identify what is a comp or what is not a comp; this will help you understand what is a good or bad deal and save you plenty of time!

Has anyone any experience taking over management of a new build OR outsourcing management of your new build? 

Even if you outsource landlording to a Property Management company you will sooner or later run into a situation where you need to have some serious conversation with your PM and that will cause your stomach churning for sure.

Then if we are outsourcing with other vendors, it is hard to find the labor at reasonable prices. 

I outsource mowing.  

With me working at a FinTech company and work with many devs, I can tell you that those numbers for outsourced devs and in-house devs are pretty spot on for the average.There's a lack of information in your request, but from you mentioned so far.