To be certified under the Living Building Challenge, ambitious performance requirements called Petals must be met over a minimum of 12 months of continuous occupancy and operations. Petals are subdivided into a total of twenty Imperatives, each of which focuses on a specific sphere of influence
- Place Limits to Growth, Urban Agriculture, Habitat Exchange & Human-Powered Living
- Water Net Positive Water
- Energy Net Positive Energy
- Materials Red List, Embodied Carbon Footprint, Responsible Industry, Living Economy Sourcing & Net Positive Waste
- Equity Human School + Humane Places, Universal Access to Nature + Place, Equitable Investment & JUST Organizations
- Health + Happiness Civilized Environment, Healthy Interior Environment & Biophilic Environment
- Beauty Beauty + Spirit & Inspiration + Education