OTTAWA — The standalone seasonally adjusted annual rate of Canadian housing starts was 217,118 units in September, according to the Canada Mortgage and Housing Corp., down from 225,918 units in August. The SAAR of urban starts decreased by 5.1% to 198,910 units. Multiple urban starts decreased by 10.7% to 131,388 units in September. Single-detached urban starts increased by 8.2%, to 67,522 units. Rural starts were estimated at 18,208 units seasonally adjusted.