I interpret this to mean that he is very confident in his deal structure and wants a definitive ruling.

Don't rely on information provided to you and interpreted by others-can't stress this enough.

He also suggested I find a CPA in my county as each county assessors tend to interpret prop 13/19 slightly different and I would need to cater the verbiage of the Trust to my county's assessors.I am currently unclear on what my best course of action would be to be able to purchase my dad's house from my siblings upon his passing. 

The key is in the interpretation of the passive income rules and guidelines which define what is a REP (real estate professional), as it relates to this space.I am looking for:1.

Williams "strong" credit is a little open to interpretation but the recommendation here is to go speak with some lenders.  

I certainly can't imagine four adults living in that place, but I am unsure how to interpret some of that reference material -- would it be considered discrimination w.r.t. familial situation?

It is somewhat town specific but I am having trouble interpreting fire code for automatic sprinklers on a large renovation.

I would assume so, but it's best to check with the lender to see how they interpret official FHA guidelines which read:"Net Self-Sufficiency Rental Income is calculated by using the Appraiser’s estimate of fair market rent from all units, including the unit the Borrower chooses for occupancy, and subtracting the greater of the Appraiser’s estimate for vacancies and maintenance, or 25 percent of the fair market rent."

Quote from @Jon Haney: Hi, quick question about selling a rental property for less than it's worth and tax implications.I purchased a rental property on 9/1/2022 This is actually controversial.See, you already labeled it a "rental property" - but it is only one of 3 possible ways to interpret your situation:1.

That's why I don't like arguing contract law because there is room for interpretation.