Some files that are useful for the Allegheny County building import.
The OSM file containing all of the data I plan on importing. Be careful, it's very large.
The Python file that I used with ogr2osm to convert the shapefile.
I decided to make three different samples from this dataset: one primarily urban, one suburban, and one rural.
A sample of data from the import covering Bellevue, PA, a densely populated town near Pittsburgh. I chose this area because it's already exensively mapped in OSM, which makes it a little easier to evaluate the data quality.
A sample of data from Castle Shannon, a suburban area with a mix of houses and commerical buildings.
A sample from Bakerstown. Most of this sample covers a sparsely populated (for Allegheny County) area with relatively few houses.