Just curious, what is a typical LTV I can draw up to with a HELOC on primary and investment property? 

You can use a tool like AirDNA to get estimates of property performance in your specific market and with your typical size and configuration of home.

What's a typical down payment for commercial multifamily?

Those typically seeking $30-$50k are for down payments or second position liens. 2.

Then laws changed and SSN's became our IDs and we could no longer typically ask for them in my area as a landlord.

I have warned countless people that the "new", "Cheapest", and "shaking up the insurance market" carriers typically come into the market under priced, have a wave of claims, then they either jack up premiums to survive or fire their staff to keep heads above water.

One key he found was mixing a welcoming atmosphere with firm guidelines.. it typically falls under standard tenant landlord laws for eviction.. so you’ll want to double-check local regulations.You mentioned Furnished Finders and Padslipt.com.. from what I’ve heard, those can be great if you’re targeting traveling professionals or short term visitors.

We typically alter our strategy seasonally, as demand shifts with the seasons.

The typical 2-4 unit I represent buyers on we are able to increase rents 40-100% especially in gentrified areas.

Also, having a rehab budget already laid out with explanations on how you got the numbers would help and is definitely a plus when I look at deals even though I typically wont use their numbers it at least shows a little more effort.