The Old Post Station Facility, along with the Seattle Steam’s
New Post Station, is one of the last working remnants of the
industrial fabric of the Pioneer Square-Skid Road Historic District
and definitely dates from before 1903. The only elements that
post-date 1922 and that do not contribute to the integrity of this building
are the metal doors on the west and east elevations of the building.
The building is a rare example of utilitarian architecture common to this
area at the turn of the twentieth century. The building has continuously
functioned as part of the Steam Plant. While it once provided back-up for
the larger plant, it appears to be used as a storage facility.