Pacheco, Don Fernando, Adobe

The Don Fernando Pacheco Adobe stands at 3119 Grant Street in the city of Concord, in central Contra Costa County. The building is associated with Fernando Pacheco, a Californio rancher whose family held substantial Mexican-era grants in the Diablo Valley and who built the present adobe in the mid-nineteenth century as the headquarters of his portion of the holdings. The Pacheco family was one of the principal Californio landholding lineages of the East Bay, and the surrounding city of Concord grew up in the late nineteenth century on land subdivided from their former rancho.

Architecturally the building is a vernacular Northern California rancho adobe of the late Mexican and early American transitional period. The walls were laid up from sun-dried adobe brick produced on or near the site from local alluvial clay, set on a low stone foundation, and originally finished with lime plaster to resist the winter rains of the inland valley. The roof was framed in hand-hewn timber and pitched more steeply than in the drier south coast, with hand-split shakes or, in later phases, milled wood shingles. The plan was the standard linear arrangement of rooms opening onto a covered porch.

The adobe was preserved through the agricultural and urban transformation of central Contra Costa County and was eventually acquired and restored by a local historical organization. It was listed on the National Register of Historic Places in 1980 under reference 80000798.

The property is held by a local nonprofit and is operated as a small house museum and community history site, with limited public hours. Within the broader California adobe tradition, the Pacheco Adobe belongs to the East Bay Diablo Valley lineage of mid-nineteenth-century rancho headquarters, a small body of work that documents the persistence of the Californio rural landscape into the early American period of central Contra Costa County.