Eastside in Riverside in Riverside County, California — The American West (Pacific Coastal)

Collins-Seaton House

1900

— Cultural Heritage Board Landmark —

Collins-Seaton House Marker image. Click for full size.

Photographed by Volt Craft, June 24, 2026

1. Collins-Seaton House Marker

Inscription. This classical revival house was designed by Los Angeles architect O.P. Dennis for real estate broker William S. Collins. Shortly after its completion Mr. Collins moved to Newport Beach where he led the development of Newport and Balboa. Fine interior woodwork was installed by the second owner, George A. Seaton, a lumber yard owner. Later, the house served as both a rest home for the elderly and as a boarding house until restoration began in 1972. Among its distinctive features is its porte-cochere with a carriage step.

Erected by City of Riverside Cultural Heritage Board. (Marker Number 45.)

Topics and series. This historical marker is listed in this topic list: Architecture. In addition, it is included in the Riverside Cultural Heritage Board Landmarks series list. A significant historical year for this entry is 1900.

Location. 33° 58.629′ N, 117° 21.637′ W. Marker is in Riverside, California, in Riverside County. It is in Eastside. It is on Mission Inn Avenue west of Eucalyptus Avenue, on the left when traveling west. Touch for map. Marker is at or near this postal address: 2374 Mission Inn Avenue, Riverside CA

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92507, United States of America. Touch for directions.

Regionally, this marker is in Greater Los Angeles,

in the Inland Empire,

and in the Peninsular Ranges.

It is also in the American Southwest.

Globally, it is in North America,

on the Ring of Fire,

in the Pacific Rim,

in the Western Hemisphere,

in the Western World,

and in the Anglosphere.

Historically, it finds itself in what was once New Spain

and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within walking distance of this marker: First Christian Church Parsonage (approx. ¼ mile away); Ward House (approx. ¼ mile away); University Heights Junior High School (approx. ¼ mile away); Santa Fe Depot (approx. 0.4 miles away); John W. North Park (approx. half a mile away); Dario G. Vasquez (approx. half a mile away); The Sutherland Fruit Co. (approx. half a mile away); San Pedro, Los Angeles, and Salt Lake Railroad Depot (approx. half a mile away). Touch for a list and map of all markers in Riverside.

Also see . . . Landmarks of the City of Riverside (#45). O. P. Dennis designed this 1900 Classical Revival residence. Originally

Photographed by Volt Craft, June 24, 2026

2. Collins-Seaton House Marker

constructed for W.S. Collins and his bride, the house was purchased by Pittsburgh banker, Mr. Seaton in 1902 who finished the house with fine woodworking and hosted many Riverside social events. (Submitted on June 25, 2026, by Volt Craft of Riverside, California.)

Credits. This page was last revised on June 27, 2026. It was originally submitted on June 25, 2026, by Volt Craft of Riverside, California. This page has been viewed 12 times since then. Photos: 1, 2. submitted on June 25, 2026, by Volt Craft of Riverside, California. • Andrew Ruppenstein was the editor who published this page.

Editor’s want-list for this marker. Photo of the house. • Can you help?