The 16,000 sq ft mansion, on 2.7 acres at 4785 Drummond Drive, boasts gardens, waterfalls, expansive lawns, a grass tennis court, a sports court, a separate guest house and a self-contained studio with office and private quarters. Rock-bottom interest rates, a scarcity of supply and growing demand from millennials and wealthy immigrants have fuelled a strong start to the spring real estate season in Toronto and Vancouver.