Larger checks often want longer track records.  2014 founding doesn't cut it when these same investors have access to groups with 1998 founded companies, with more deals and similarly consistent returns.Co-investment: Larger checks often do require significant co-investment.  10% of equity is common.  

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. 

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

It's tough to see your property sit vacant, especially when you've invested in renovations and are pricing it competitively.I feel you should re-evaluate your management company,If they're consistently pushing for lower rents without providing clear reasons or alternative strategies, it might be worth considering a change.

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

Transparency always wins.3)Make sure to have mattress and pillow protectors, top-notch cleaners that take pictures of every sheet as they lay it before guests get there, and consistent pest control.

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

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.