The housing-bust hit to houses, townhouses, condos

Source: Maryland Department of Planning

Sales of all types of homes have really plummeted in the state since the peak days, as you can see from this new Maryland Department of Planning chart. The number of single-family homes didn't just drop well below its 2002 level, for instance, but also below the 2002 level for townhouses -- which had accounted for about half as many sales as detached homes that year.

Here's how the decline by housing type breaks down:

Measured from the peak in 2005, townhouse sales dropped the fastest, according to the planning department -- almost 68 percent.

The pace of decline in single-family home sales was a bit slower, at 63 percent. But because this housing type accounts for the largest piece of the market, the change in sheer numbers is pretty dramatic: from just over 70,000 in 2005 to under 26,000 four years later.

The drop in condo sales, at 62 percent, was close on the heels of detached housing.

The planning department is measuring all arms-length sales, not only those on the multiple-listing service. You can find its full report here. And if you really like data, you can peruse the agency's Excel files of home sale figures by housing type, including average and median prices, down to a ZIP code level.