Will the housing market in Columbus remain "on fire"?

[Steven J. Umaña]

All, 

I currently own a duplex and a single family home in Columbus. As I make renovations to increase rents, I can't help but wonder whether we are heading for a crash in the market. With the transportation grant from the Feds, the new ENORMOUS metro park development on the West side, and downtown sprawling out further and further, it seems as if we are heading toward continue prosperity in real estate prices for some time to come. 

Can anyone think of ANYTHING that could hurt this market???? Asking for a paranoid friend....

Steve