Architecture at Zero, now in its fourth year, is challenging all students, architects and designers worldwide to envision two mixed-use, zero net energy (ZNE) housing proposals for adjacent parcel sites in Oakland, California. The competition is a response to the ZNE targets set out by the California Public Utility Commission (CPUC) which aims for all new residential construction in the state to be ZNE by 2020. Entrants are eligible for winning up to $25,000. Early bird registration ends September 12. All projects must be submitted by October 31 at 1PM PST. Learn more on the competition website and review last year's winners.