Affordability continues to improve. According to the National Association of REALTORS®, housing affordability index was 110.5 in November, 2006 - the fourth consecutive monthly increase and above the level in November of 2005. The increase is due to continuing low interest rates and home price declines. Another great reason to buy now. Homeownership is a safe, secure way to build long-term wealth," said National Association of REALTORS President Pat Vredevoogd Combs.