The average price of a single-family home in Calgary has dropped for the third consecutive month and in October was more than $53,000 less than it was in July when it hit a record $505,920. 6 @7 \0 f! J' A, n2 N - m' G. a/ L* O. T! Y0 T9 I% L) [http://www.canada.com/calgaryher ... ee7aa2f&k=35625