Would you have any recommendations, in your experience, for what to look out for in the documents that would be red flags or items that would negotiable?

This is true for bonus depreciation items as well.  

We discussed a few more items last night and I will make sure we follow through for you on those.

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

For example if you were to exit a new build in 5 years there may be no cap ex cost (i can think of few cap ex items that does not last 5 years - maybe carpet in class c and lower), just maintenance costs which would be fairly small.Best wishes

It is not your responsibility to house this person's items indefinitely in your rental. 

TIC in this case is virtually synonymous with coop.finance items- There are several ways to finance TICs – group loans and fractional loans are the most common. - Fractional TIC loan: you can now own a unit in a building that isn’t classified as a condominium, yet from a financing perspective, will feel that way.

The LA fires will drive rates up for everyone and is now a major line item expense.

Not a singe mail item sent yet.

I'll Google those items and see what I find.