Depending on how complex your needs are, even MailChimp can work as long as you have someone set it up properly.

The appraisal was done utilizing three comps, 2 in my condo development, and one in a condo complex close by.

Hello,I'm hoping I can get an idea what steps I need to take, in which order, for possibly purchasing a small MF complex.  

After building some rapport, he offered a 23 unit brick complex in a solid location on the New Britain /Kensington line for 300k down then eventually lowered it to 250k down for a length of 10yrs @ 6% and wants 55k per unit.

@Joe Tomko there are a number of different strategies that can be deployed to protect their assets, but as you have gathered, the laws revolving around it are very complex.

It stands to reason that anytime someone takes a big step forward financially (e.g. a first purchase, a multi-family unit, a first apartment complex), the risk may overcome them.

I am planning on buying a 4 unit complex for 200k using a fha 3.5% loan.

Of course, I don't know the details of the property that you are looking at and THIS IS NOT LEGAL ADVICE, but generally the complexity of a quiet title action following a tax sale depends on the number of defaulting taxpayers. 

@Henri MeliI used to live at an apartment complex that had a billboard on site.

You are getting ripped off BAD.I've done complex projects on multifamily for half that price.