The Waag Society, a Dutch institute for the arts, sciences and technologies, has developed with designer and software engineer Bert Spaan a map of all the buildings in the country. The maps represents the age of the buildings with a colour code and displays some data about each element.
metrhispanic 
This is such a cool map. What an interesting project. I hope this catches on, it would be very cool to see this for other cities.
Well, in fact something similar exists near your home, altough in a less cool presentation. Just try http://maps.nyc.gov/doitt/nycitymap/template?applicationName=ZOLA , and you will access about the same information or more. I wonder how they cope with the privacy issue, look around staten to see what I mean, some data they publish could never be published where I live
I just looked up the apartment where I used to live in Queens. We have this for our local town here in CT as well. Actually, ours is quite detailed. The information is all considered public records here, you could get this from Town Hall if you were in the neighborhood.
Sure, it also is public records here too, but (probably because catholic and protestant ethos have their differences), you can know here all these data, but the owner’s name is protected on the internet; to know it you must go to the property registry office and make a written demand presenting your ID documents. Different cultures…
Wow. That would be nice, but my wife an my names are quite visible on our records.
Maps are obviously a great tool to visualize information, but sometimes the become artworks! This is an artist’s work in several cities around the world: http://archiscapes.wordpress.com/2014/11/02/rainbow-colored-maps/
It is clear that OSM is opening new aesthetic possibilities… thanks for the comment and the link!