Consumer confidence hit a five-year high in November, while prices fell in October.
Rates on 30-year loans have been below 4 percent all year and have reached a few all-time lows since the Federal Reserve announced its latest round of bond buying in September.
Nationwide, 74.1 percent of all homes sold in the July-September quarter were bought by workers earning the U.S. median income of $65,000.
This was up slightly from the 73.8 percent in the second quarter.
The median price of all new and existing homes sold in the third quarter was $189,000, up from $176,000 in third quarter last year and the best showing since the final three months of 2008, according to NAHB.
"Clearly, for families who qualify for a mortgage at such favorable terms, the outlook is brightening, but being able to afford a home and getting approved for a mortgage are still two different things in the current marketplace," NAHB chief economist David Crowe.