Number + 栋 + Building Noun
栋 (dòng) is a measure word used to count buildings, typically standalone structures like houses, apartment blocks, or office buildings. Place a number before 栋 and follow it with the noun for the building type. For example, 三栋房屋 means "three buildings."
这条街上新建了两栋写字楼。
zhè tiáo jiē shàng xīn jiàn le liǎng dòng xiězìlóu.
Two new office buildings were built on this street.
我家住在那栋白色的楼里。
wǒ jiā zhù zài nà dòng báisè de lóu lǐ.
My home is in that white building.
这个小区一共有十二栋住宅楼。
zhège xiǎoqū yīgòng yǒu shí'èr dòng zhùzhái lóu.
This residential compound has a total of twelve apartment buildings.