Lewis Ainsworth House, American Craftsman residence in Orange, California.

The Lewis Ainsworth House is a restored American Craftsman home in Orange, California, built in 1910. It stands next to St. John's Lutheran Church, across from the public library and near Orange City Hall. The house is owned by the City of Orange and was listed on the National Register of Historic Places in 1981.

Lewis Ainsworth, who came to California in 1849 for the Gold Rush and settled in Orange in 1900, had the house built in 1910 as a retirement home for himself, his wife Persis and their children. His daughter Ina Ainsworth Butler designed it. Ainsworth lived there only four years until his death in 1914; the family kept the house until 1975, and the city bought it in 1976 and restored it. It joined the National Register of Historic Places on March 13, 1981.

This residence reflects the Arts and Crafts philosophy that valued handmade details and natural materials in home design. The way it blends simple forms with careful craftsmanship shows how people of that era thought about the relationship between their living spaces and the natural world.

The residence sits on East Chapman Avenue near St. John's Lutheran Church, with Orange City Hall and the Public Library directly across the street. Its central location makes it easy to visit when exploring other downtown landmarks.

The house was designed by a woman, which was unusual for that building era and reflects how individual families drove innovation in residential design. This fact makes it a noteworthy example of women's contributions to American architecture during the early 1900s.