Address

18405 Mt. Hamilton Road, 
Mt Hamilton, CA 95140
Joseph D. Grant County Park

House museum hours

The house museum is open only by guided tour. Tours typically take place on the first Saturday of the month during summer. Visit the park's calendar for upcoming dates and times. 

Park hours

The park is open year-round from 8 a.m. until sunset. Vehicle entry fees are collected year-round. For up-to-date trail closures, please call the trail hotline at (408) 355-2200 and press 3.

Access fee information here: Park fees

Joseph D. Grant County Park

Located in the Mt. Hamilton foothills, Joseph D. Grant County Park (Grant Park) is a 10,882-acre park containing numerous recreational resources, interpretive sites, and cultural and historic structures. The park is rich in environmental, cultural, and archaeological resources and is designated as a California Point of Interest (SCL-049 Joseph D. Grant Ranch at Hall’s Valley).

Grant Park comprises almost two-thirds of the original Rancho Canada de Pala, a large mountainous ranch established through a land grant in 1839 by Governor Alvarado. Occupied as early as 1835, the Grant family began to acquire former Canada de Pala rancho lands in the 1880s. By 1911, Joseph D. Grant owned much of the southern portion of the rancho, a strip of land along the western side and the north end of Hall’s valley. The remainder of the central portion of the rancho was owned by the Tierman family and by Frank Hubbard. In the 1930’s, Joseph Grant acquired Frank Hubbard’s holdings.