Here is a list of why adding ADUs in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

Look at Intel headquarters, Google, FB, Amazon, Nationwide, Honda, etc.

For example Intel headquarters, Google, FB, Amazon, Nationwide, Honda, (recently Anduril announced another 4k jobs to Columbus).

Added brand new cabinets and granite countertops.

Or rather, my $100K -- which is a rough guess of revenue added by pricing / min stay automation across our two properties.

- Suggest you Google "Amortization Calculator" and run a few scenarios to open your eyes!

The reality is the opposite - if it's not in writing then the PMC doesn't have to provide the service or can charge extra for it.We have a 12 page management contract that we've added our real experiences to over the years, with the intent of protecting both us AND the landlord.

They highlight the difference between the average home cost and the average home value suggested by the price of large institutional companies such as American Homes 4 Rent and Invitation Homes Inc.I suspect this is nonsense (especially as according to google their price to book ratio is positive). 

You just added another crumb of information which can mean anything

I second the others here - look into adding a CPA to your team.