We all know it's a renters market. I get a bazillian hits on suumo and a handful of them work for me, although I up my budget a bit assuming I can negotiate. I know on the high end of things you can generally talk people down from their asking price quite a bit, assuming it's been up a month or so. For something a little more down to earth, say, 15-man, is an offer for 20% off the ask unreasonable?
I will likely be moving a small office (in a mansion) soon and have to do the leg work. The one I'm having now was rented before the entire world ran out of money. This time, we're trying it w/ budgetary constraints.