National Historic Landmark

Los Alamos Ranch House

Los Alamos, Santa Barbara County, California
Listed
April 14, 1970
Type
Building
Period
Industrial
Ref No.
70000148

About this property

The Los Alamos Ranch House is a historic adobe house near Los Alamos in northern Santa Barbara County, California. The house, the centerpiece of Rancho Los Alamos, was built about 1840, and is one of the best-preserved examples of domestic architecture from California's Mexican period. The building was designated a National Historic Landmark in 1970. The Los Alamos Ranch House is located on the south side of California State Route 135, about 3 miles (4.8 km) west of the town of Los Alamos. It is a single-story structure, built out of locally made adobe bricks. It is in a relatively unspoiled rural setting that has changed fairly little since the house was built about 1840. The house has thick walls, with mostly original window and door openings, and is covered by a gabled roof. Its interior features include a number of American adaptations, including wood plank flooring and ceilings, and paneled wooden doors. Rancho Los Alamos originated as a Mexican land grant given in 1839 to José Antonio de la Guerra, the son of the Commandant José de la Guerra y Noriega of the Presidio of Santa Barbara. The grant of nearly 49,000 acres (200 km2) was one of a large number of such grants made by the Mexican government in the 1830s. The house was built by Chumash natives who lived on the rancho, trading their labor for goods and food. It was a common stopping point on what was then the main road between Santa Barbara and Monterey, now Route 135. De la Guerra was able reconfirm his ownership of the land grant after California became a state, but it failed due to a decline in the price of beef, extended drought, and flooding. In 1876, Thomas Bell, John S. Bell, and James Shaw, purchased 14,000 acres (57 km2) of land, part from Rancho Los Alamos and part from the adjacent Rancho La Laguna, from which they then set aside the town site of Los Alamos. The area prospered agriculturally, suffering a decline in the 1930s when the railroad ended service to Los Alamos. The ranch house now stands on a much reduced property, and is private property. Los Alamos Ranch House/Rancho Los Alamos (de la Guerra)

Location

Los Alamos, Santa Barbara County, California
34.75541, -120.33724

Categories

EXPLORATION/SETTLEMENTARCHITECTURE
National Register nomination ›
Sources

Property data from the National Register of Historic Places, National Park Service (public domain).

Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.

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Native Heritage
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Settlement
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Nearby Historic Sites

La Purísima Mission
Colonial
7.4 mi
Lompoc Public Library
Industrial
10.7 mi
Mission de la Purisima Concepcion de Maria Santisima Site
Colonial
10.9 mi
Lompoc Veterans Memorial Building
Listed
10.9 mi
Minerva Club of Santa Maria
Industrial
14.4 mi

Questions about this property

When was Los Alamos Ranch House listed on the National Register?

Los Alamos Ranch House was listed on the National Register of Historic Places on April 14, 1970.

What type of historic resource is Los Alamos Ranch House?

Los Alamos Ranch House is classified as a building in the National Register of Historic Places.

Is Los Alamos Ranch House a National Historic Landmark?

Yes. Los Alamos Ranch House has been designated a National Historic Landmark (NHL), the highest level of federal recognition for historic properties in the United States.

What is the period of significance for Los Alamos Ranch House?

The period of significance for Los Alamos Ranch House is recorded as the industrial era.

Can I research the history near Los Alamos Ranch House?

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