Посмотрите:
https://wiki.openstreetmap.org/wiki/JOSM/Plugins/Improved_Kendzi3D
Марек, уже посмотрели
http://forum.openstreetmap.org/viewtopic.php?pid=460398#p460398
http://forum.openstreetmap.org/viewtopic.php?pid=461264#p461264
Andrei is my student. We plan next development: more roofs, openings… I make presentation about improved S3DB at the SOTM tomorrow.