If you want a handy metaphor for the economic ups and downs of the past five years, you could do worse than the house on Baldy Mountain Road outside Sandpoint. The extravagant, customized home – one neighbor calls it “the castle” – was built in November 2005 by the stunt charity show “Extreme Makeover: Home Edition,” relying on a massive volunteer effort to help a bachelor who had stepped in to raise his sister’s kids after she passed away. The bachelor proceeded to refinance the place twice, lose his job, try to start a business, default, leave town. The bank foreclosed on the castle in October. It sits on the market, price plummeting.