noun
administration office; management office
Refers to an office responsible for administrative or management tasks, such as in a building, facility, or organization.
マンションの管理事務所に鍵を借りに行った。
I went to the apartment building's management office to borrow a key.
Compound of 管理 (kanri, 'management') and 事務所 (jimusho, 'office').