Vancouver, one of the most popular Canadian housing markets for the country’s immigrants, saw the average value of real estate purchases in July drop 12 percent from the same period last year, according to data collected by Bloomberg News.

The city’s real estate prices have boomed in recent years due in large part to foreign investment from China and home purchases by Chinese immigrants, who are the city’s largest foreign born ethnic group.

With a cooling Chinese economy and Vancouver home prices that have risen to become the highest in Canada though, many this year have been warning that Vancouver’s real estate market is in a bubble.

Toronto also saw a slow down in its real estate market, although it was much more moderate, with year on year home purchase volume decreasing by 1.5 percent in July.