“This could be a once-in-a-generation opportunity for real estate investment,” said Wong, whose Calgary, Alberta-based fund has already invested $5 million cash and will spend millions more in the U.S. Southwest over the next several months.

International investors bought 154,000 homes and condos in the 12-month period ending in May, down nearly 10 percent from 170,000 for the same period a year earlier, the National Association of Realtors reports.

Much of this activity is thought to be because of the weak dollar and low interest rates that are even attracting buyers from all over the world seeking 2nd homes.