350 Contra Costa is a grassroots climate organization working across Contra Costa County for cleaner air, renewable energy, and environmental justice — with a particular focus on frontline communities affected by industrial and building pollution. With Lift Up Contra Costa, they developed the original concept for the Healthy Homes Hub through the Contra Costa Jobs First Table, and led much of the community engagement that shaped its design. 350 Contra Costa shares a website with its affiliated advocacy organization, 350 Contra Costa Action.