Can the investment compound?  

So I spent $57k and received $64k.Side note: I realize that $172k - $105k - $2k equals $65k and not $64k, the $1k difference is a result of compounding rounding errors.Hope that clears it up for you.

Compounded with misconceptions of what adds value and does not.

If you send the bank an extra principal payment (mark it as such) they cannot compound interest on that money. 

A lot is happening in this city & it's only going to compound.

Now, you could stop at unit 1 and spend all that time paying it down over what looked like a 10 year period in your example, or you could just let the loan term pay down as planned and compound that money so your buying more assets, over and over.

So I put together a sheet, the buyers threw in the numbers, and results were - a 6 year compounded annual return of - 81%.

Urea (yes, even concentrated from human urine) is an ammonia compound which can used in bomb-making.Just saying....local authorities might be curious.....

With compounding returns it is quite easy but...Brian BurkeI am curious about California.

That's better achieved with a drip campaign over time and a series of themes in you message that appeals to a specific problem or combination of compounded problems.