The building was constructed in 1917-1919, its design provided by the Office of the Supervising Architect of the United States Department of the Treasury, then headed by James A. Wetmore and and represents a prominent regional example of Beaux Arts architecture. It is a single-story masonry structure, built of bricks with stone trim. Its main entrance is located on the corner diagonal and features a colonnade of six Corinthian columns in front of matching pilasters. The stairs leading to the main entry are marked by wrought iron lamp posts with globular lights. The entrance, now with modernized doors, is flanked by paired casement windows with transom windows and decorative carved panels above. The building is topped by a parapet with dentillated cornice that extends around the building. The interior lobby, although since modernized, features murals depicting the area’s natural beauty that were painted by local artist Loran Percy in 1980 and 1982. The building was placed on the National Register of Historic Places in 1986.