Selling an expensive house to buy a cheaper condo in the city used to be a no-brainer, but with housing prices soaring in many areas, it’s getting harder to make the math work. For the last 20 years, Mary and Randy Marlo raised their family in a beautiful ranch-style bungalow that was perched on a hill in the East Toronto neighbourhood of West Rouge. In the summer months, they’d spend family time playing in the large backyard or watching...