You need representation that has a lot of experience to avoid common issues like early terminations, performance of that location for tenant, etc..Rule #1 is make sure you are happy with market rents for the building (not what current tenant is paying).

My husband and I are new to real estate investing. We want to begin by house hacking with a duplex in order to eliminate our current rent payment and have more cash to invest. 
Need help finding a duplex … tips, tric...

Paid market value however the property is under performing.

Owners mistakenly ASSUME all PMCs offer the exact SAME SERVICES and PERFORM those services EXACTLY THE SAME WAY, so price is the only differentiator – so, they often select the first PMC they call or that calls them back!

I previously relied on 3rd party GC's building quite a few single family to 4 unit buildings throughout Philadelphia and eventually transitioned to self performing.

This can have a very beneficial impact as personal property typically has a much shorter useful life for depreciation purposes than real property.For example, if you are getting a cost segregation study performed on a commercial office building, there will most likely be assets that have been classified as part of the building but are able to be reclassified to real property and depreciation over a shorter useful life such as 5,7 or 15 years rather than 39 years.

On the company’s website, they do not publish ANY information on any of their past deals historical performance, actual to pro-forma results, or full cycle results.

So that is a strategy for you to consider.The challenge is that flips for a beginner can be daunting.  

BRRRR is a timeless strategy, I might also recommend "house hacking" and "Subto" as some beginner-friendly methods to build your real estate portfolio. 

Specifically ERVs. I'm working towards Energy Star in my new 4 unit build because it's fairly easy to get slightly above code and cheap to have the raters come and certify you with the Energy Star label which would ad...