When I look at an investment, the question I ask is will it deliver the returns I want based on what is known, ignoring speculation. 

If you consistently analyze properties, recognizing a good deal will be much easier when it shows up.

One component of our communication consists of monthly news updates on the portfolio and individual site performance, which are uploaded to our investor portal, including monthly reporting of financials and individual facility performance.

They apparently do not have time to verify permits (under what criteria units were added or that the work was even done with a permit).To the OP, I fear your property will consistently appraise low when obtaining HELOC or refinancing and that a re-appraisal will not reflect what you are seeing of homes being appraised with an agreed upon negotiated selling price.I am not saying this is the way it should work. 

Become great at systems and processes because that is really the only thing that makes investing work consistently.  

I've heard of mentees who started cleaning up construction areas on a flip at the end of each work day or picking up supplies at Home Depot and delivering them to the job site.

Do you have enough time in these that you can show consistent trends in expenses and vacancy rates? 

I have been looking into the South Philadelphia market as the area is expecting the Bellwether District, a megadevelopment of industrial and life-science buildings, to be delivered in phases over the next dacade.

Hiring a good property management company who's on top of things, or ensuring you or someone else you hire put aside additional time for property inspections on a more consistent basis.

I deliver a first rate, top of market product and rarely do I see my properties sit longer than a few weeks.