A large body of literature has established that chaos in the home environment, characterized by high levels of disorganization, lack of household routine, crowding, noise, and unpredictability, undermines social-emotional and behavioral development in early childhood. It is less clear whether household chaos is linked to elevated risk for behavior problems in adolescence. The aims of this study were 3fold: (1) characterize the variability of adolescent and caregiver reports of household chaos over time; (2) examine associations among caregiver and adolescent reports of chaos over a 9-month period; (3) consider how between- and within- individual variability in household chaos predicts adolescent externalizing and internalizing problems. This study drew data from the Family Income Dynamics study, a 9-month longitudinal study. Participants included 104 adolescents between 14 and 16 years old (55% female; M age = 14.85) and their caregiver (92% female) from low- and middle-income families. Results showed that adolescent-reports of household chaos were more variable over time compared to caregivers' reports. Adolescent-reports of household chaos had positive within- and between-level associations with externalizing problems and between-level associations with internalizing, while caregiver-reports of chaos had no links to behavior. This work highlights the importance of adolescents' own perceptions of household chaos when considering its links to adolescent development.