About CPF and the Awards

Held in conjunction with CPF’s 2026 Annual Conference in Riverside, the 2026 Mission Inn Preservation Design Awards Ceremony and Reception will spotlight excellence in historic preservation in a setting that reflects the very spirit of the work being honored. This special evening brings together award recipients, conference participants, preservation leaders, and supporters from across California to celebrate outstanding preservation projects and leadership through the Preservation Design Awards and President’s Awards.

Founded in 1978, the California Preservation Foundation (CPF) is California’s statewide nonprofit organization dedicated to the protection of historic places and cultural heritage. Through education, advocacy, and community-centered programs, CPF supports the people, projects, and policies that keep California’s historic resources vital and valued. We now support a national network of more than 36,000 members and supporters. Click here to learn how you can become a member.

Jay Littleton Ball Park Project Team

Project Lead & Title
Teresa Grimes – GPA Consulting

Owner/Client & Title
Diane Anyala – City of Ontario

Author & Title
Emily Rinaldi (Associate Architectural Historian) – GPA Consulting

Historic Architect
Dick Gee – Spectra Company

Lead Engineer
David Cocke – Structural Focus

Lead Structural Engineer
Melineh Zomorrodian – Structural Focus

Consulting Engineer
Christine Lamb – AEC Consultants, Inc.

Jay Littleton Ball Park Cultural Resource Study

The Jay Littleton Ball Park is the winner of a 2020 Preservation Design Award for Cultural Resource Studies. Award recipients are selected by a jury of top professionals in the fields of architecture, engineering, planning, and history, as well as renowned architecture critics and journalists. The Award will be presented on Wednesday, October 21, 2020 at an online awards ceremony. Tickets and sponsorship options are available at californiapreservation.org/awards.

Read more about the Preservation Design Awards

About this project

The Jay Littleton Ball Park in Ontario was constructed in 1936-37 and has been in continuous use since its completion. The City anticipates repair and improvements to the facility in order to maintain the ball park’s viability and ensure its continued operation as a municipal baseball facility. The ball park is a Historic Landmark, so changes made to it must be consistent with the Secretary of the Interior’s Standards. The City commissioned the HSR to guide work in a manner that is consistent with the Standards. The HSR documents the ball park’s existing condition and character-defining features; it also includes a five-year management plan intended to guide future rehabilitation work. It was the result of collaboration between City staff, structural engineers, preservation architects, and historic preservation professionals. The document is a comprehensive management tool that will ensure conscientious stewardship of the park for years to come.

A historic baseball field with green wooden dugout benches and a covered grandstand, recognized with a 2020 Preservation Design Award for Cultural Resource Studies by the California Preservation Foundation.
Black-and-white photo of a vintage baseball stadium filled with spectators, with players on the field. Text above reads: Jay Littleton Ball Park Historic Structure Report, Ontario, California.
A sunlit, empty baseball field with green grass, dirt infield, and an outfield fence. The backstop, dugouts, and bleachers are visible, along with tall light poles and a clear blue sky.
Cover sheet for Jay Littleton Ball Park Accessibility Upgrades, showing a location map, project details, elevation photo of the ballpark, accessibility notes, directory, and architectural diagrams on a white background.
A green baseball dugout next to empty bleachers under a metal roof, with a dirt field and a person standing in the distance near the outfield fence on a sunny day.
A table titled Five-Year Plan lists recommended treatments for Jay Littleton Ball Park. It includes phase numbers, descriptions, locations, and estimated costs for further investigation and building an accessible restroom.
A report page with a table featuring photos and descriptions of Jay Littleton Ball Park. The table lists features, importance, and conditions, with three images: an aerial view, an infield view, and the grandstand.