| Kalantiao Building 1958
| > Named after the Datu Kalantiao, who was said to have created in 1433, the first legal code in the Philippines known as the code of Kalantiao.
> Construction started in March, 1956 during the term of Governor Conrado F. Estrella (1955- 1963).
> Underwent general facelift and restoration works under Governor Amado T. Espino, Jr. in 2008.
| Building Occupants
| 1st Floor
| Human Resource Management Office (North Wing)
Provincial Legal Office (North Wing)
Provincial Employment Services Office (South Wing)
| 2nd Floor
| Provincial Health Office (North Wing)
Provincial Population Office (South Wing)
Provincial Nutrition Office (South Wing)