具建築、社會或文化重要性的屋宅；可能經過官方核定，也可能沒有。

古宅(P,,U,繁體中文-偏好,D,,)
古厝(,U,繁體中文-非偏好,UF,,)
古居(,U,繁體中文-非偏好,UF,,)
古屋(,U,繁體中文-非偏好,UF,,)
ku chai(P,,U,韋氏拼音-偏好,UF,U,U)
gǔ zhái(P,,U,漢語拼音-偏好,UF,U,U)
gu zhai(P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
historic houses(P,,U,英文-偏好,D,U,PN)
historic house(,U,英文-非偏好,AD,U,SN)
historic homes(,U,英文-非偏好,UF,U,N)
houses, historic(,U,英文-非偏好,UF,U,N)
historische huizen(P,,U,荷蘭語-偏好,D,U,U)
historisch huis(,U,荷蘭語-非偏好,AD,U,U)
casas históricas(P,,U,西班牙語-偏好,D,U,PN)
casa histórica(,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
........建築環境 (層級名)
............單一建築作品 (層級名)
................<單一建築作品 (建築環境)>
....................<依特定種類區分之單一建築作品>
........................<依功能區分之單一建築作品>
............................歷史建築
................................古宅

藝術與建築詞典根目錄
....物件層面
........建築環境 (層級名)
............單一建築作品 (層級名)
................<單一建築作品 (建築環境)>
....................<依特定種類區分之單一建築作品>
........................<依功能區分之單一建築作品>
............................<居住結構物>
................................住所
....................................房屋
........................................<依功能區分之屋舍>
............................................古宅

meaning/usage overlaps with....

古宅博物館

英文....	Houses with architectural, social, or cultural significance; may or may not be officially designated.
荷蘭語....	Wordt gebruikt voor huizen die van architectonisch, sociaal of cultureel belang zijn; kan al of niet officieel zijn aangewezen.
西班牙語....	Casa con una importancia arquitectónica, social o cultural. Puede estar oficialmente diseñada o no.

古宅............	[AS-Academia Sinica]
.................	AAT-Taiwan 借詞編輯與使用原則 (2013)
historic houses............	[VP]
.................	Historic Preservation (1949-) 4: 3, 16
.................	Icom News (1948-) Vol. 4, No. 3, 5
.................	AAM, Official Museum Directory (1989)
.................	Worcester Art Museum Library, List of subject headings, unpub. (1976)
.................	Dictionarium Museologicum (1986)
.................	AATA database (1995-) 124678 checked 26 January 2012
historic house............	[VP]
.................	Getty Vocabulary Program rules
historic homes............	[VP]
.................	Museum News (1924-) Vol. 6, No. 1, 61
houses, historic............	[VP]
.................	Getty Vocabulary Program rules
historische huizen............	[Bureau AAT]
.................	AAT-Ned (1994-)
historisch huis............	[Bureau AAT]
.................	AAT-Ned (1994-)
casas históricas............	[CDBP-DIBAM]
.................	Comité, Plural del término en singular
casa histórica............	[CDBP-DIBAM]
.................	TAA database (2000-)
Subject:............	[Bureau AAT]
.................	CDMARC Subjects: LCSH (1988-) Historic buildings; Historic houses, etc.
.................	Worcester Art Museum Library, List of subject headings, unpub. (1976) U.S.--Historic Houses
.................	AATA database (1995-) 124678 checked 26 January 2012
.................	Bureau AAT, RKD

Getty AAT: 300008064 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300008064
聯合目錄： 古宅 、古厝 、古居 、古屋 、ku chai 、gǔ zhái 、gu zhai 、historic houses 、historic house 、historic homes 、houses, historic 、historische huizen 、historisch huis 、casas históricas 、casa histórica