楼 (w)

(lóu) house with more than 1 story; storied building; floor; CL:層|层[ceng2],座[zuo4],棟|栋[dong4]

楼上 (w)

(lóushàng) upstairs

楼下 (w)

(lóuxià) downstairs

楼主 (w)

(lóuzhǔ) original poster (in an online forum); landlord of a building (traditional)

楼子 (w)

(lóuzi) pavilion; variant of 婁子|娄子[lou2 zi5]

楼宇 (w)

(lóuyǔ) building

楼层 (w)

(lóucéng) story; floor

楼市 (w)

(lóushì) real estate market

楼座 (w)

(lóuzuò) gallery seat (in theater)

楼厢 (w)

(lóuxiāng) loft

楼房 (w)

(lóufáng) a building of two or more stories; CL:棟|栋[dong4],幢[zhuang4],座[zuo4]

楼板 (w)

(lóubǎn) floor; floor (ie. metal plate, concrete slab, wooden planking etc)

楼梯 (w)

(lóutī) stair; staircase; CL:個|个[ge4]

楼梯口 (w)

(lóutīkǒu) head of a flight of stairs

楼梯台 (w)

(lóutītái) staircase balcony; landing

楼梯间 (w)

(lóutījiān) staircase; flight of stairs

楼橹 (w)

(lóulǔ) watch tower; movable battlefield turret

楼盘 (w)

(lóupán) building under construction; commercial property; real estate (for sale or rent)

楼台 (w)

(lóutái) balcony; high building (esp. in poetry); tower

楼船 (w)

(lóuchuán) ship with several decks; turreted junk

楼兰 (w)

(lóulán) ancient oasis town of Kroraina or Loulan on the Silk road near Lop Nor 羅布泊|罗布泊, modern Xinjiang

楼道 (w)

(lóudào) corridor; passageway (in storied building)

楼阁 (w)

(lóugé) building; pavilion

楼阁塔 (w)

(lóugétǎ) multi-storied pagoda

楼面 (w)

(lóumiàn) floor

楼顶 (w)

(lóudǐng) top of a building