The 国勢{こくせい}調査{ちょうさ} census asks every habitant of Japan to tell whether they live in a 一戸建【いっこだて】 (stand-alone house) , a 長屋【ながや】建{だて}(テラスハウスを含む), a 共同{きょうどう}住宅{じゅうたく}, or その他{ほか} (other).
QUESTION: What is the difference between a 長屋建 and a 共同住宅?
If it is determined by the number of floors, please explain exactly where the threshold is.


