California’s Unsold Inventory Index (UII), a closely watched index indicating the number of months needed to deplete the supply of homes on the market at the current sales rate, declined to 3.8 months in December, the lowest level in five years, according to the CALIFORNIA ASSOCIATION OF REALTORS® (C.A.R.).  By comparison, the UII for existing, single-family homes stood at 5.6 months in December 2008.