In the dataset, those ones are owned by the city. When the property becomes vacant and the landlord can't pay the taxes, the landlords default and the city scoops the property up for non-payment of taxes. The 16K in this dataset are just the ones the city owns. There are apparently many more that are held by banks or someone hoping to make a buck if gentrification expands there. Here is a typical street with vacants in Baltimore [1].
If I were to classify "abandoned" buildings myself, I'd go by the wiki definition which would include buildings that "have fallen into serious disrepair and which could only be put back into operation with expensive effort" [2]. However, if we even include the data, it would only be for buildings the city has identified as vacant. You've raised a good point that it'd be hard to mechanically determine whether a building is abandoned or disused. I'll have to check if the dataset is only for truly abandoned buildings like the ones above. Kindly, Elliott [1] https://www.flickr.com/photos/sandrabitar/3771516836/ [2] http://wiki.openstreetmap.org/wiki/Key:abandoned On Mon Jan 12 2015 at 4:39:52 PM Richard Welty <rwe...@averillpark.net> wrote: > On 1/12/15 4:27 PM, Elliott Plack wrote: > > I'm working with some other locals on another import, this time for > Baltimore City. In thinking of good attributes to add to buildings, I > thought it might be pertinent to denote the city's 16K+ vacant buildings > [1] on the OSM buildings. Have other people been doing this? According to > the wiki [2], it seems like the best tagging would be either > abandoned:building=yes or a combo of building=yes and > abandoned:building=yes. > > what is the definition you are using for abandoned? > > here in Albany there is a major problem with empty > buildings with absentee landlords who are not maintaining > the buildings. how would Baltimore classify these? > > richard > > -- rwe...@averillpark.net > Averill Park Networking - GIS & IT Consulting > OpenStreetMap - PostgreSQL - Linux > Java - Web Applications - Search > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-us >
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