As I’m making my way across the country to the National Multi Housing Council Spring meeting, something came across my radar today that caught my attention. It shouldn’t really be a surprise given that apartment sales have accelerated over the past year, but commercial and multifamily originations were 36 percent higher than they were during the same period last year, according to a report from the Washington, D.C.-based Mortgage Bankers Association. That figure included a 45 percent increase in loans for multifamily properties. What's driving these improvements? Is it purely low interest rates? And how long can they continue?