If you bought a home during the pandemic, especially in 2021, the next couple of years could bring some serious sticker shock.More than a million Canadian homeowners are renewing their mortgages this year and next, many of them coming off ultra-low interest rates that were common at the height of COVID. Experts are warning some households could see their monthly payments jump by as much as 20 per cent in 2026, adding thousands of dollars a year to the cost of owning a home. L.J. Aguinaga, a real estate broker, spoke to Andrew Carter.