Refers to the physical building where a court of law is located. Often used in legal or administrative contexts.
See also: 裁判所
The new courthouse will be completed next month.
Reporters were waiting in front of the courthouse.
裁判所 refers to the court as an institution or legal body, while 裁判所庁舎 specifically means the courthouse building.
Compound of 裁判所 (court) and 庁舎 (government office building).