I am just north of Atlanta and facing the same situation in a pretty rare 2/2 patio home community ...

https://en.wikipedia.org/wiki/Equal_Credit_Opportu...The law applies to any person who, in the ordinary course of business, regularly participates in a credit decisionandAmong other things, the ECOA states that it is illegal for creditors to:Disallow regular sources of income, such as reliable veteran's benefits, welfare payments, Social Security payments, alimony, child support, etc.

Property  held for investment is any property that produces portfolio income such as  interest, dividends, annuities, or royalties not derived in the ordinary course  of a trade or business.

NOTICE: If Landlord fails to repair a condition that materially affects the physical health or safety of an ordinary tenant as required by this lease or the Property Code, Tenant may be entitled to exercise remedies under §92.056 and §92.0561 of the Property Code.span>If Tenant follows the procedures under those sections, the following remedies may be available to Tenant: (1) terminate the lease and obtain an appropriate refund under §92.056(f); (2) have the condition repaired or remedied according to §92.0561; (3) deduct from the rent the cost of the repair or remedy according to §92.0561; and (4) obtain judicial remedies according to §92.0563.

For how often LLCs are touted, it does seem interesting (maybe even telling) that in a community as large as this one almost nobody has a first hand experience where an LLC saved them from damages that an ordinary insurance policy could not.

The houses you buy and sell aren't investments, they're inventory.You'll pay tax on the gains as either short term capital gains or ordinary income.

You don't need anything out of the ordinary.

Unfortunately the tenant started hoarding, stopped cleaning, and let people start living in a tent on the patio (this was in an HOA controlled townhome neighborhood, so that was not fun).

It's a Civil Matter, so NO real out of ordinary action will be taken to serve the civil suit. 

The property manager has a responsibility to determine if the door stopped working due to ordinary wear-and-tear or if it was due to tenant abuse/neglect.