The Mosaic Project

The Mosaic Project

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Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from The Mosaic Project, Nonprofit Organization, 478 Santa Clara Avenue, Suite 200, Oakland, CA.

07/08/2026

After 20 years of dedicated work — a decade of searching for our permanent home and another decade of navigating the Alameda County’s public review process — we are thrilled that the County recently approved the Conditional Use Permit for our future home in Cull Canyon, Castro Valley.

We are grateful for the overwhelming support we received, including the efforts of over a thousand community members who wrote and called the Supervisors to support the project.

Now, a lawsuit has been filed by TwiningVine Winery and a few other neighbors challenging our Conditional Use Permit under the California Environmental Quality Act (CEQA).

We are committed to seeing this project through to show our kids the power of persistence, speaking out, and standing up for what matters and to ensure access to our transformative programs in nature for generations to come.

We stand behind our cutting-edge, environmentally sustainable design, we stand behind a decade of expert analysis, and most importantly, we stand behind the value of The Mosaic Project for Alameda County, the Bay Area, and beyond.

We also remain committed to being exemplary neighbors, and the invitation we extended to TwiningVine Winery and other neighbors when we first found the property in 2016 still stands — we would love to partner with them in uplifting all of Cull Canyon.

Onward and forward! Here’s to many more decades of Peacing It Together!

06/23/2026

💫 Fall Youth Leadership Training is Here! 💫

Are you 15–21 and passionate about developing leadership skills, building peaceful communities, and creating magic? Join us this fall!

Build your facilitation skills, grow as a leader, and become part of a community dedicated to empathy, inclusion, and positive change.

Register at the link in our bio and learn more on our website!

04/14/2026

The consequential vote for Mosaic’s Future, the final vote for our permit to create a permanent home on our Castro Valley property, is on Thursday, April 16. Please email and call your Supervisor to tell them to vote YES and then spread the word to your networks!

Check out the links in our bio for an easy-to-use template to email the Supervisors and for more info about the facts! Here are the Supervisors phone to call:

District 1 – David Haubert (Dublin, Fremont, Livermore, Sunol) (510) 272-6691

District 2 – Elisa Márquez (Hayward, Union City, parts of Newark): (510) 272-6692

District 3 – Lena Tam (Alameda, San Leandro, West Oakland): (510) 272-6693

District 4 – Nate Miley (East Oakland, Pleasanton, Castro Valley): (510) 272-6694

District 5 – Nikki Fortunato Bas (Albany, Piedmont, Berkeley, parts of Oakland): (510) 272-6695

03/17/2026

Hear from our mosaic peace ambassadors which Mosaic agreement is important to them!

Apply today to help facilitate the learning of the next generation of mosaic peace ambassadors!

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Address


478 Santa Clara Avenue, Suite 200
Oakland, CA
94610