This project assesses mold presence and indoor air quality conditions in selected off-campus student rental houses. The objective is to apply industrial hygiene sampling methods to evaluate environmental conditions and interpret laboratory findings using established guidance values. Students will collect airborne mold samples using calibrated sampling pumps and spore trap cassettes while also measuring oxygen concentration, carbon dioxide, temperature, and relative humidity. Samples will be submitted to an accredited laboratory for analysis. Laboratory results and environmental data will be compared to published evaluation criteria to identify potential moisture-related concerns and ventilation limitations. Based on the findings, students will assess indoor environmental risks and develop recommendations to improve housing conditions. This project emphasizes applied field sampling, laboratory coordination, and professional data interpretation in a real-world residential setting.