Quote from @Matthew Hull: How do multifamily properties (2 to 4 units) appreciate compared to single-family homes?

Congrats on your 11th property. 

I have owned this property for 8 years, 7 as a rental property.

I'm finding when I look at a given property, I get inaccurate comps in two ways: 1st, a property will show up in the list as a comp to my subject property but have a REALLY low sale value; upon investigation I find that the property acutally hasn't sold in 10+ years but PropStream thought it was comp; 2nd, a property will show up as "Sold" in the MLS status, but all ownership and transaction history tab don't reflect the new data.

Try to make a goal of buying 1-2 properties each year.

I believe they eventually sold for a huge profit and 1031’d into a larger property.

It's a great returning property. 

NYC property values are increasing at or above the national average (4%).

You generally have to leave 25% equity in an investment property.

Only the PMC is continuously connected with you until you sell the property.