內部有三層樓的公寓。由三個住宅單位所組成的建築，則稱為「三室公寓(集合式住宅)」或「三層三戶公寓(住宅)」。

三層樓建築物(公寓)　(P,,U,繁體中文-偏好,D,U,U)
三樓公寓(,U,繁體中文-非偏好,UF,,)
san ts'eng lou chien chu wu (P,,U,韋氏拼音-偏好,UF,U,U)
sān céng lóu jiàn zhú wù (P,,U,漢語拼音-偏好,UF,U,U)
san ceng lou jian zhu wu (P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
triplexes(apartments)　(P,,U,英文-偏好,D,U,PN)
triplex(apartment)　(,U,英文-非偏好,AD,U,SN)
appartementen met drie verdiepingen(P,,U,荷蘭語-偏好,D,U,U)
appartement met drie verdiepingen(,U,荷蘭語-非偏好,AD,U,U)
casas trifamiliares(apartamentos)　(P,,U,西班牙語-偏好,D,U,PN)
casa trifamiliar(apartamentos)　(,U,西班牙語-非偏好,AD,U,SN)

藝術與建築詞典根目錄
....物件層面
........組件 (層級名)
............成分
................<依特定背景區分之組件>
....................<建築劃分>
........................<房間與空間>
............................<依地點位置和背景脈絡區分之房間與空間>
................................<內部空間>
....................................<房間組>
........................................公寓 (內部空間)
............................................三層樓建築物 (公寓)

distinguished from....

三室公寓(混合住宅)

英文....	Apartments with rooms on three levels. For buildings comprised of three dwelling units, use either "triplexes (multiple dwellings)" or "three-deckers (dwellings)."
荷蘭語....	Appartementen met kamers op drie verdiepingen. Voor gebouwen bestaand uit drie wooneenheden wordt of 'drie-onder-één-kap' of 'three-deckers (dwellings)' gebruikt.

三層樓建築物(公寓)............	[AS-Academia Sinica]
.................	智慧藏百科全書網 November 13, 2012
三樓公寓............	[AS-Academia Sinica]
.................	AAT-Taiwan 借詞編輯與使用原則 (2013)
triplexes(apartments)............	[VP]
.................	Hunt, Encyclopedia of American Architecture (1980) 8; triplexes
.................	Oxford English Dictionary (1989) triplexes
.................	Webster's Third New International Dictionary (1961) triplexes
.................	Getty Vocabulary Program rules
triplex(apartment)............	[VP]
.................	Getty Vocabulary Program rules
appartementen met drie verdiepingen............	[Bureau AAT]
.................	AAT-Ned (1994-)
appartement met drie verdiepingen............	[Bureau AAT]
.................	AAT-Ned (1994-)
casas trifamiliares(apartamentos)............	[CDBP-DIBAM]
.................	Comité, Plural del término en singular
casa trifamiliar(apartamentos)............	[CDBP-DIBAM]
.................	Ching, Diccionario Visual de Arquitectura (1997) 47
Subject:............	[Bureau AAT]
.................	Candidate term AVERY - 1/92; triplex apartments
.................	Bureau AAT, RKD

Getty AAT: 300248512 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300248512
聯合目錄： 三層樓建築物 、三樓公寓 、san ts'eng lou chien chu wu 、sān céng lóu jiàn zhú wù 、san ceng lou jian zhu wu 、triplexes 、triplex 、appartementen met drie verdiepingen 、appartement met drie verdiepingen 、casas trifamiliares 、casa trifamiliar