However, these properties generally have a lot of land improvements that qualify as well as certain portions of electrical, mechanical and plumbing that can qualify.

For example, we need proof of renters insurance and proof they put electricity in their name.So, it seems odd that you are accepted but they keep wanting more information. 

When electricity passes through the titanium it acts as a catalyst that converts the dissolved salt (aka sodium chloride) into sodium and chlorine.  

My husband did 90% of the work himself, only using contractors for large electrical, plumbing, and construction projects.

A person who has spent his 2000 to 4000 minimum CPA practice hours doing foreign currency conversions at Deloitte for a Belgian energy company may not know the first thing about real estate or anything else.

I won’t try to tell you what to do other than if there’s certain properties that just consume way more energy you might consider 1031ing them into slightly larger properties where you could get better economies of scale for your time and expenses.

Roads, water, sewer, gas, electric, etc..I'm also here for any discussion on any other items that might be of note, trying to learn as much as possible on this front.

The limit on scaling is your deal flow (mine never was that good) and time it takes to perform the value add (I got fairly quick for example, my last rehab did all new plumbing, electrical, and flooring.  

Also, check if there are incentives or rebates for upgrading to more energy-efficient systems in your area. 

@Alecia Loveless is correct--tenants need access 24/7 to their electric service panel, water and heat, assuming those are individual utilities for each unit.