LAGUNA HILLS, Calif., Nov. 19, 2021 /PRNewswire/ — Architecture Design Collaborative (ADC), in partnership with Jamboree Housing Corporation, announced the opening of Sierra Fountains, an affordable new construction development located in the City of Fontana. With some 15% of Fontana residents living below the poverty line and the state’s already high housing costs, the city has a significant need for more affordable family housing.