The History of Hayes Mansion


The Hayes family, led by the matriarch, Mary Hayes Chynoweth (pictured below), accrued their wealth through iron ore mining ventures in Wisconsin and Michigan beginning in 1885. The family, Mary, her two sons, Jay O. Hayes and Everis A. Hayes (pictured below), along with their young families, moved to San Jose in 1887 after purchasing 239 acres and a house from Frederick Tennant. Their first mansion, a 22,000-square foot 1891 Queen Anne Victorian with more than fifty rooms, burned to the ground in 1899.

Mary Hayes

Construction on the current Hayes Mansion began in 1903 and the family, except Mary Hayes Chynoweth (who died on July 27, 1905), moved in time for Thanksgiving, 1905. The original Mansion was 41,000 square feet and contained 64 rooms. Just like the first Mansion, this Mansion was built as a triple residence. Mary was to occupy the rooms on the second floor of the center portion, and sons Jay and Everis and their families had the East and West wings respectively.


Everis A Hayes

The Hayes family ultimately owned nearly 700 acres of land adjoining the Mansion, much of which was planted in fruit orchards and the rest for general farming to support the family staff. Almost everything that the family ate was grown and processed here.

The park to the North of the mansion was originally an extensively landscaped park for the Hayes family, with exotic plants and roads and paths winding through it. The Hayes family sold their remaining property, including the Mansion and the park land, in 1954. The park area was Frontier Village amusement park from 1960 to 1980. The park is now Edenvale Garden Park, operated by the City of San Jose.