Good news if you're selling a home. 

According to the S&P/Case Shiller index, South Florida saw the biggest monthly gain in home prices in December. 

Prices on single-family homes here in Palm Beach County, along with Broward and Miami-Dade, grew by .9 percent  from November and were higher than any other monthly gain in the nation's 20 largest metro areas. 

Home prices here were up 16.5 percent year over year in December. 

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