Think that sounds shockingly short? Or way too long? The fact is, people's reasons for selling their home are different, as are their time frames.

Still, there are some common threads—financial and emotional—that lead us to call it quits on our home and move on to the next one. And you don't always see them coming.

Read on for some telltale signs it's time to start packing your bags (and when you should settle in for the long haul).