Standard&Poor's Ratings Services affirmed its 'AAA' long-term and underlying ratings (SPUR) on Colorado Housing and Finance Authority's class I and class II bonds under its single family mortgage bond indenture, reflecting the conversion of $236 million in variable rate demand obligations (VRDOs) to floating rate notes (FRNs), and the extension of credit and liquidity coverage from the U.S. Department of the Treasury's temporary credit and liquidity program (TCLP) to through December 2015. In addition, Standard&Poor's affirmed its 'AA' long-term rating on the authority's class II single family mortgage bonds. Finally, Standard&Poor's affirmed its ratings on the authority's series 2002 B-3 and 2002 C-3 bonds in anticipation of the substitution of standby bond purchase agreements