I only buy the Aquasource Henshaw White Watersense Elongated Height 2-Piece Toilet from Lowe's (item number 98923 model # T802).

The other business I run is reselling, listing items on eBay & FB.

Here's a https://www.irs.gov/businesses/cost-segregation-audit-technique-guide-chapter-4-principal-elements-of-a-quality-cost-segregation-study-and-report to the IRS website noting specific items that are included in the cost segregation study report. hmm, that website is a 404 error.  

turnkey section 8 is not going to be like buying a brand new home there will always be differed items or stuff that does not work etc.. age of homes makes this impossible. then you add section 8 tenants and  there you go

I would highly encourage paying a GC to walk deals out the gate, have them give a scope of work so you can see what items costs.

Will itemize for brevity purposes:- Mother wants to move to Saint George, Utah and get a home in a 55+ community- Me (son) has cash and wants to buy the home for her.

The PM should provide itemized items of what was done.

Never use an Expense Ratio %-  do a line item forecast. 

But, on the other hand, if your life is very busy with your w2 job or you have a family to take care of, then maybe having a property management company will do you well and just worrying about larger items.

You missed an important item: Depending on how a person does #1 or #2, it could get them: A fast-pass to the "Principles Office" for "bullying" and now there sitting in "detention"....