It was built c.1880 and was renovated in 1911, perhaps after fire damage. It is a two part commercial building with red brick laid in common bond.
Its 1993 NRHP nomination describes it as "a highly preserved example of popular Western Commercial design, which was common in Montana through the territorial and early statehood years. Embodying several elements of this style, the Wellman Block presents the characteristic brick front to the street while masking a simpler gable roofed mass behind. The symmetrical storefront with recessed entrance, regularly placed double hung windows across the second story and decorative parapet are all common to this treatment."[2]
