I own a condo in Chinatown, constructed in the past 10 years. 30 units, solid construction, near the Verizon Center, Convention Center, and multiple metro lines. We had 2 foreclosures in 2007, and the value of our condos still haven't recovered, relative to the condos just within a one-block radius.
In my experience, when owners are delinquent and the cash flow to a condo dries up, there is a slow death cycle. Amenities and maintenance go down, which scares off desirable tenants/buyers. Condo fees go up, as you have to make up for the bad debt, which in turn may put more financial pressure on other owners' budgets and in turn increase the delinquency rate.
So, I am still waiting for a tremendous recovery, and I think our condo is actually in great operational shape, but these foreclosures still are hurting us. I am inclined to never buy another condo unless it is a compelling deal. A condo where 45% of your business partners aren't current is a non-starter.