If you invested in large multifamily 3-4 years ago via syndication in the South, Southwest, or other boomtown: You are cooked. 

If there are changes you want to make then send your tenants official notice of those changes via in person delivery or certified and regular mail along with a copy of the new lease.

The right idea is going to be the bread and butter.1) Ideal location2) Quality properties over quantity of properties3) 1.25x DSCR4) Intention to hold no less than 8, but ideally 12+ years.5) Sufficient cap reserves6) Mechanisms to enhance cash flow(via alt investing or house strategies).7) Liability protection through no PG loans(if possible), LLC formation, property management and being a diligent landlord.8) Invest deeper, before wider.Now if you're talking where to invest, different information.

The tenant has also ignored several of my attempts to contact her via phone and text and will only respond to my emails. 

He knows what is possible via RE.  

It has ways to setup autopay via ACH as well, though I haven't had any tenants use it yet.Besides that, my best info has always come from other landlords.

Don't even get us going about S8 tenant retaliation via abuse of utilities!

People that have experienced the smell coming through the walls via the interior voids will tell you it is quite potent, persistent and annoying.

I'm going to try to post snippets of things I've learned this past year as a way of paying it forward and gratitude for all I've learned and keep learning via this community.

Duplex can always add additional units via the ADU laws. 8) Related to number 1, purchasing a property with an existing ADU is cheaper than buying a property and adding an ADU.