Roi Et Provincial Hall has been redeveloped according to the policy of the Government Center System Organization, which designates a provincial hall as the center of the provincial government and shall express its local identity. Roi Et Province, thus, has carried out the redevelopment project of the provincial hall of which design has been adhered to a tetrahedron style (a building with four gable ends), a standard building design provided from the central government, and combined with its local identity derived from architectural elements on the facades to present inherited meaning to people’s perception. This study aims to find the architectural elements which provide identity on the facade of Roi Et Provincial Hall. The method used includes an investigation of the architectural elements on the facades which affect perception in 3 aspects: mass-form, ornament and texture. The study consists of three steps: 1) an investigation of the old hall’s facade, 2) an investigation of local identity buildings’ facade, and 3) an interpretation of identity to a design. Finally, a 3D model of Roi Et Provincial Hall is developed.