Our Mission To make Oakland’s Dimond District a vibrant, safe, and beautiful place for everyone to live, work, shop, and play. Our Motto Involvement Builds Community Who We Are We are a community-based, 501(c)(3) non-profit organization, with membership and participation open to all. We bring together residents, businesses, agencies, and other groups to engage in community projects, to address issues of common concern, and to cultivate a friendly, inclusive neighborhood. Volunteering The Dimond Improvement Association has many committees and projects to benefit the community. Take a look at our Projects & Committees page and see what might interest you! There are opportunities to volunteer from once a year to once a week.