I am not married and have no children.

I had a daughter get married and some health/hospital issues in the last month - but back on track now!

I literally had no clue where to start on that one, so this was a big help.I tried to pull equity out of one of our other properties, which I purchased before getting married.

In a nut shell:  Your primary residence you can sell with up to 250K for single or 500K for married profit and not pay taxes.  

If you are not in a community property state, then a multi-member LLC (regardless of whether the members are married to each other) should submit a Form 1065 and related schedules.In case anybody is wondering, here is what google has to say about community property states:There are nine community property states: Arizona, California, Idaho,Louisiana, Nevada, New Mexico, Texas, Washington and Wisconsin.  

Would it be advisable for a single person to just avoid being legally married?

Lets just say this pass month Ive been a very satisfied married man !!!

I think as a young investor (especially if are not married and don't have any kids yet) you should focus your efforts and time of owning and building small businesses that you are passionate about ( via S-Corps ).

I work a full time job in Manhattan, I am married, with 2 kids, and I own a home.

*studios: tenants are more mobile and move more often, get married, kids, etc. *1 br: first units to go empty when the economy tanks into recession because the tenant can't team up with friend to handle rent.