We just looked at our booked sales through May and compared them to last year's numbers. We are 325% over last year at this time! Even taking out our biggest sale leaves us way up from 2011. It's unusual for commercial sales to rebound with or before residential, but that does seem to be happening.
There will still be time to buy or lease before prices really start to rise, but that time is clearly coming, since very little was added in the way of new space in the past decade. So, if you have space needs, fill them now, or don't complain when you can't do it, or do it at the same price, next year!