That’s covered in the documentation. :) In short, our initial plan is to not 
modify existing building footprints. There’s code in the repo for adding 
addresses to buildings that are missing them, but that is more of a phase 2 
item.

As of a couple weeks ago, OSM has 19,370 buildings in the metro area, about 
8000 have address tags on them. There are an additional 1300 address points.

Our first-pass import will add an additional ~570k buildings, ~510k of which 
have addresses. Not all buildings have them, such a detached garages, barns, 
etc. Some have more, so the total  number of addresses imported will actually 
be ~561k. We also have enough data to be able to easily add address tags to 
about 4000 extant buildings. I’m sure we could get the balance of untagged 
buildings without too much work.

One open question for me, which we I would appreciate guidance on, is whether 
or not to import address points for each unit number in a building, where we 
have them. Right now, we are not planning to, but it would be easy to change 
things to add them.

Darrell


On Dec 3, 2014, at 14:15, Paul Johnson <[email protected]> wrote:

> I'm not 100% sure how much address data there is, but I'm aware that there's 
> a substantial number of building footprints in place already.  Curious how 
> this is going to be conflated with existing data (though, given the 
> relatively high quality of previous RLIS imports, this is largely a secondary 
> concern).


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