Even the address provided on that letter spans multiple suites (19179 Blanco Road, Suite 105-404).

@Karen Seguin, it all depends on what you are trying to convey to your tenants.At minimum, any welcome letter should provide updated contact info for maintenance requests and mailing address for rent payments, and if the legal notice address is different than lease, include that.This can also be a good way to politely remind people of any general rules that you expect them to adhere to.  

I personally think proactively addressing these items is best practices across all of real estate. 

In particular I am seeking help for the following;1) "Provide an evacuation plan (shall include Site address, floor plan//site map, escape route(s), meeting placeoutside the home, emergency number 9-1-1).

The way you are saying it, it sounds like they all have the same address.

Because the "2nd" is not addressed with monthly payments, transactions with a prior HARP are huge problems.

When you get your appraisal, post your appraised value and value of property without the ADU and ideally the address.  

., should foundation work be done before addressing anything else?

However, you may have to put these losses on layway due to the Passive Activity Loss (PAL) rules which are also addressed in my post.3.

Google "nyc dob bis" and when you get to the website type in your borough, street and address.