This report documents the outcomes of the final stage of the Brabham Action Learning Partnership, a research initiative of the CRC for Water Sensitive Cities and key Western Australian government and industry partners (see the companion report,  Brabham Action Learning Partnership: Case report for a summary of the first two stages). The research found that the current WA planning and policy system comprehensively articulates a wide range of water-related goals, but some issues exist in implementation. After describing some of these constraints, the report explores 11 opportunities for system-wide change to support water sensitive urban development outcomes in the north-east growth corridor.