I don’t have much knowledge in that department yet as I am just starting to get my toes wet!

Additionally, the Treasury Department and the IRS decline to adopt a position deeming all rental real estate activity to be a trade or business for purposes of section 199A.

Talk with the town planning department and they can guide you. 

Remember that your a professional @Markus Gomez.I would advise calling C.A.R. legal department for clear clarification.Use caution..

How about Indian State Bank which has maintained a huge mortgage department.

It depends on the municipality, but often there is some department that will track things like vacancy and rental rates on multifamily for instance (especially if they are taxing it in some way).

You will need to check with your building department. 

Talk to the small local banks and credit unions, and go to the commercial lending department, not the mortgage department.  

Department of Housing and Urban Development (HUD) is among the 9 federal agencies impacted by the shutdown.HUD allocates 100% of the funding to public housing authorities (PHAs) that administer the Housing Choice Voucher (HCV) Program nationwide.

That seemed weird.I ask my agent about why that might be she said probably no big deal, just add another mailbox.Because I've had several instances of conflicting info from different parties (not just on this deal) I try to validate anything somebody tells me with at least one other party.So I called USPS about adding a mailbox and they said no I have to contact the county.I contact the county and after a few tries got routed to the code enforcement department.