CAR Peace Rover at Islamic Cultural Center of Northern California, producing a mobile art exhibtion and community workshop event. 

CAR Peace Rover at Islamic Cultural Center of Northern California, producing a mobile art exhibtion and community workshop event. 

Contact us at hello[at]

or at (415) 425-1647


Community engagement, access and equity.


Peace can be achieved.


  • Inspire participation
  • Bridge communities
  • Enable access
  • Strengthen resilient communities

Collective Action Studio (CAS) is a community art focused nonprofit company. We produce artwork, curates exhibitions, and develops educational projects in collaboration with artists, communities and institutions. Our goal is to develop access, equity, and positive learning outcomes for the community and to advance social justice, to bolster communities through the arts. 

Founded and directed by Justin Charles and Chris Treggiari, Collective Action Studio includes an evolving cast of artistic collaborators. Projects are often co-developed with strategic partners and include a wide range of artists non-profits, cultural centers, museums, arts commissions, art galleries, art fairs, festivals and more.

Current collaborators include Fernanda D'agostino, who is acting as the CAS Consultant of Public Art Process. D'Agostino is a renowned artist with 23 permanent public art installation in airports, museums, and public sites around the world. In addition to being a pioneer in new-media and interactive media installation art, she has expertise in Design Team Integration, Fabrication and Budgeting, working from scale models, working with structural engineers, and translating ideas from ephemeral materials to archival materials.



Justin Charles Hoover (胡智騰), Principle

Hoover works with the visual arts to explore issues of displacement, liminal languages, and cultural disjuncture. His work spans media from performance and video, to sculpture, installation and public art. His heritage is Chinese-Russian-American and he seeks to engage communities and develop collaborative and educational projects. Currently Hoover splits his time between San Francisco and Los Angeles, where he is employed as the Curator of the Chinese-American Museum of Los Angeles in the historic El Pueblo Monument and has worked as a curator since 2004 curating exhibitions, public programs and artistic projects. Hoover holds bachelor degrees in Peace Studies and French Literature from Colgate University, a Master Degree in New Genres Fine Art from the San Francisco Art Institute and a Master Degree of Public Administration of International Management from the Middlebury Institute of International Studies. 

Chris Treggiari, Principle

Treggiari's artistic practice investigates how art enters the public realm and connects wide ranges of people and neighborhoods in a variety of communities. He highlights diverse community identities, shared histories, and personal stories through participatory, mobile platforms that encourage exploration from the viewer. Often these platforms entail creative methods that aim to turn the passive viewer into an active art-maker who can participate in sharing a personal voice in a community dialogue. Treggiari has extensive experience with art and community engagement and currently teaches at the California College for the Arts in the department of Art and Public Life. He also is an acting commissioner for the Oakland Arts Commission. 

Current Collaborators

Tra Bouscaren Interactive Media Art Consultant

Fernanda D'Agostino Public Art Process Consultant

Sergio De La Torre Artist Collaborator


CAS has exhibited, curated and developed programs for venues including:

  • The Venice Architecture Biennale, US Pavilion (Design Action for the Common Good)
  • Sculpture Quadrenniale Riga (SQR), Latvia
  • Portland Institute of Contemporary Art, Time based Arts Festival,
  • San Francisco Museum of Modern Art
  • Torrance Art Museum
  • The Getty Museum
  • Berkeley Art Museum
  • Yerba Buena Center for the Arts
  • San Jose Museum of Art
  • The Oakland Museum of California
  • ZERO1 Biennial
  • and more...

CAS has have received grants from the Department of State's Bureau of Cultural and Education Affairs, WESTAF, National Endowment for the Arts, California Arts Council, San Francisco Foundation, the San Francisco Arts Commission; the Creative Work Fund; the Arts Commission of San Jose; Puffin Foundation; The Seattle Center Foundation, and the Zellerbach Foundation.