Building Change, Inc. is a 501(c )(3) nonprofit corporation founded to promote and implement vital improvements to the accessibility, comfort, efficiency, health, and safety of residential built environments. Our primary focus has been low- to moderate-income homeowners and occupants in aging urban and suburban Maryland communities that contribute to grid strain, GHG emissions, and increased resource and health service usage. We have convened thought leaders in building, data, and environmental science, macroeconomics, and resource management to develop the Wayfinder Initiative. Wayfinder connects building owners and occupants to sources of project funding not traditionally associated with residential building performance. The Wayfinder interface and registry provide the market infrastructure for validated Home Performance Attribute Certificates (HPACs) to be swapped by owners/occupants for vital project funding with the potential to eventually generate passive income, improve the livability and value of the building, as well as the general wellbeing and productivity of the occupants. Local government environmental initiatives, academic research teams, healthcare and insurance networks, corporate SDG/ESG/DEI investors and advertisers, and philanthropies all benefit from access to anonymous building performance and owner/occupant data as proof of impact for making a tangible difference. This home performance data megamarket, built upon the foundation of the existing open source HPXML protocol, generates value for citizens and many other stakeholder groups, facilitating data driven decision making that will support meeting climate goals. Our long-term objective is for Wayfinder to be implemented globally bringing corporate leveraged rebates to local homeowners/occupants, trades, and organizations around the world.