A Strong Finish for Ottawa's Real Estate Market in 2017 Members of the Ottawa Real Estate Board sold 771 residential properties in December through the Board’s Multiple Listing Service® System compared with 711 in December 2016, an increase of 8.4 per cent. The five-year average for December sales is 687. December’s sales included 205 in the condominium property class and 566 in the residential property class. The average sale price of a residential-class property sold in Dec