It protects you if someone comes along down the line and claims that they were the real legal owner to the property.Survey - that's where someone pays for a surveyor to come out and precisely measure the boundaries of the property line (e.g. using GPS or surveying tools).

There are still questions on precisely where the line for "advertising" is drawn.

...you may want to repost this with the location in the title to garner more precise attention...

@Karen Coffelt, @Rachel N. is precisely right.

Numbers won't be perfect or precise. 

What it does also is free my mind and time to focus with precision on the business side of real estate while being Active Duty military. 

You're investing, which is precisely what I recommend people do.

@Andrew Johnson Great advice - I totally agree, precisely why I'm on the forum.

Not sure exactly what you asking here... the average is what is often skewed... the median indicates the most precise central tendency.If this data set represented the after tax pay of residents in the city of Smallville, notice how 1 through 6 are sort of in the same range, but 7 and 8 materially different. 

I love real estate precisely because of the control it gives me, and the monthly income.