Reach codes, local measures that “reach” beyond the minimum state Building Energy Standards to require more resource-efficient buildings, are powerful tools for driving climate action and decarbonization efforts. Today, at least one in three Californians live in a community with effective reach codes. However, the development and adoption process can be challenging for jurisdictions that are disadvantaged, under-resourced or struggling to identify the best options. One new and highly effective tool that helps ‘level the playing field’ is the free online Cost Effectiveness Explorer, developed by the statewide reach codes program. This session presents a hands-on look at this tool to demonstrate how a local jurisdiction can effectively use the tool to identify reach code measures, as well as lessons learned from two different jurisdictions.