There is a crash coming, there always is as RE has proven cycles.  

Good deals are getting harder and harder to find right now as market cycle is peaking. 

If you need money, at 10 years you will probably have enough equity in the property to pull out some cash for another purchase or whatever.Rich Weese has discussed real estate cycles in some of his posts, I would check them out.

Maybe appreciation patterns are just another part of the cycle -- different areas appreciate at different times.

Some of it the information was written in a different real estate cycle so not all of it applies today but that is with any book as it is written at a specific period in time.The lending environment has changed since then as well with loans that are available for funding. 

Me being a principal commercial broker I work with various different types of investors across the country with transactions and where they are at for their life cycle so it's easier for me to understand the different choices and thought processes.

Gotta consider market cycles.

So you bought a commercial property at the bottom of the cycle starting to recover at a 9 cap.

Personally I spend money on making sure my properties are easy on the wallets during the monthly heating cycle.  

However Other that "forced appreciation" appreciation is difficult to predict and is a function of market cycles and inflation.