Additionally, I aim to refine my approach to financial analysis by adopting a structured formula for calculating investment metrics tailored to my investors' needs.

And it looks like the institutional quality and low debt features of most DSTs aren’t immune to good ole market forces.

Syndication A is 900 employee with 30 years track record, Syndication B is 1 year syndication graduated from Cardone school of institution run by three people, the Syndication A offering lets say conservative 10% IRR Class B Core ; syndication B like you offering value add somewhere in Dallasville Class C value-add promising 15%IRR.

The op is of Seattle, and every little surrounding city has adopted their own set of rental laws(many following and based on Seattle, Portland, Tacoma, etc.  

Depending on where you are, there's probably a large institutional wholesaler that is always hiring.

The FNMA "New Book of Business" instituted circa 2010 (see this SEC document that mentions the term) https://www.sec.gov/Archives/edgar/data/310522/0000950123110... completely revamped GSE underwriting as @Jack B pointed out. 

I I have heard from several people living in the outskirts that Counties are adopting new septic standards based on, no kidding, the UN Sustainability Goals. 

This isn't the days of having to go through every file by hand.Financial institutions, I believe, are starting to get "stressed" and they will be more proactive in addressing this issue.

Benefits homeowners NOT institutional investors.

First, there is no institutional lender that I know of that would touch doing a HELOC behind a mortgage that did not belong to the borrower.