The Pacific Coast Railway Company grain warehouse is an excellent example of a wood frame, corrugated iron industrial building, a building type once common in San Luis Obispo County. The warehouse is typical of buildings that stretched along local railroad tracks. It is the only structure of this type built specifically for grain handling still remaining within the city of San Luis Obispo.

This warehouse was the transfer point from farm wagon to local narrow gauge trains which led to steamer wharves at Port Harford, now known as Port San Luis.

The warehouse is the only remaining Pacific Coast Railway building located in what was the railway headquarters complex. It is a visual reminder of an era when the San Luis Obispo area was a major grain and bean-producing region.

Source: Adapted from the NRHP nomination submitted in 1988.