Sales rose in the South (25.8 percent to 405 thousand), the West (2.9 percent to 141 thousand), the Midwest (10.6 percent to 73 thousand) and the the Northeast (33.3 percent to 48 thousand).
The median sales price of new houses sold was $319,700, above $314,800 a year earlier. The average sales price was $385,200, also higher than $366,100 in September of 2016.
The stock of new houses for sale was flat at 279 thousand. This represents a supply of 5 months at the current sales rate.
Year-on-year, new home sales increased 17 percent.