noun, noun which may take the genitive case particle 'no'
inside the premises; on-site
Refers to the interior or within the grounds of a specific facility such as an office, laboratory, power plant, or similar institution. Often used in compound phrases like 所内規則 (in-house rules) or 所内研修 (on-site training).
所内は禁煙です。
Smoking is prohibited inside the premises.
所内の設備は最新です。
The on-site facilities are state-of-the-art.