Main Building
Tax Accounting Department, Construction and Transportation Department, General Civil Affairs Department, Computer Room, Urban Architecture Department, Vehicle Support Office, Civil Service Office, Nonghyup Branch Office, Night Duty Room, Masan Tax Office Filing and Consultation Office, Lobby (Entrance), Convenience Store, Restroom

Annex Building
CCTV Control Center, General Control Room, Restroom

Main Building
Mayor’s Office, Vice Mayor’s Office, Secretary's Office, Bureau Directors' Offices (Administrative Director, Industrial and Construction Director, Welfare and Environment Director), Planning and Audit Officer, Administrative Department, Culture, Public Relations, and Sports Department, National Advisory Council for Democratic Peaceful Unification, Briefing Room, Small Conference Room, Restroom

Annex Building
Environment Department, Record Office, Restroom

Main Building
Cultural Heritage Officer, Safety Management Department, Economic and Business Department, Women's Rest Area, Large Conference Room, Computer Training Room, Haman County Scholarship Foundation, Tourism and Education Department, Public Employees' Union Office, Restroom

Annex Building
Innovation Strategy Officer, Annex Conference Room, Restroom