Habitat for Humanity’s Terwilliger Center for Innovation in Shelter (TCIS) aims to address the global housing deficit by fostering inclusive housing markets. In Kenya, TCIS has been working for five years to catalyze the housing market system through interventions in construction labor, materials, finance, and behavior change. The Monitoring, Evaluation, Accountability, and Learning (MEAL) framework supports this mission by tracking systemic market changes through data collection and reporting.