The down payment size changes the math more than the price does. At $1M, the minimum down payment crosses 10 percent above the first $500,000, which is a materially larger cash requirement than a benchmark-priced purchase, and CMHC insurance is not available above $1.5M under current federal rules.
A mortgage broker runs the actual stress-tested qualification, since property taxes, heating and condo fees where applicable all count toward the debt ratios alongside the mortgage payment itself.
Joel Dyck works with buyers at this price point regularly and can connect you with a broker before you start touring. Get your hand-reviewed valuation from Joel Dyck.