Well, from a very quick perusal of the internet, an
October 2007 Forbes report shows this home as the most expensive in Canada at
"$28.5 million Canadian (approximately $28.9 million U.S.)
This seven-bedroom, five-bath oceanfront estate called "Sweet Pea" sits on 2.4 acres of gated property with over 1,400 feet of ocean frontage and its own private pond. For more information, contact Robert Milloy of Sotheby's International Realty Canada, Victoria, British Columbia."
and this home in the Victoria suburb of Metchosin as the fourth most expensive in Canada
"$24 million Canadian (approximately $24.3 million U.S.)
This oceanfront property took four years to design and construct, and was finally completed in 2006, earning a National Canadian Architect Award. The home spans 8,300 square feet and includes six bedrooms and six full baths, though the soaring glass walls that separate the living and sleeping areas, called the "Canyon River," remain its most notable feature. For more information, contact Robert Milloy of Sotheby's International Realty Canada, Victoria, British Columbia."
and this home in the Victoria suburb of Central Saanich as the tenth most expensive:
$18.5 million Canadian (approximately $18.8 million U.S.)
"This oceanfront country estate is set on 27 acres on the Saanich Inlet. In addition to the 10,000-square-foot main house, there is a garage, veranda, stables and a guesthouse. The entryway to the home is done in a porte cochere (coach door) style, and the second floor includes a sitting room and two decks. For more information, contact Peter Nash at Newport Realty. "