Objective: This study examines the extent to which mothers coreside with extended kin during partnership transitions.

Background: Parental relationship changes are increasingly common, especially among unmarried parents. Although research shows that families often coreside out of economic necessity, extended kin coresidence as a function of maternal relationship changes has not been explored. Using life course theory, this study examines where and with whom mothers and their children live during partnership transitions.

Method: Data are from 2,886 mothers who participated in the Future of Families and Child Wellbeing Study. Bivariate and multinomial logistic regression, random effects, and fixed effects models were estimated to determine if
mothers’ coresidential relationships with extended kin were formed by changes in mothers’ coresidential romantic partnership statuses.

Results: Mothers’ partnership changes were associated with extended kin coresidence, especially among unmarried mothers. By Year 9, mothers were more likely to live “elsewhere.” Mothers’ parity and multipartnered fertility decreased their chances of living with extended kin.

Conclusion: This study indicates that maternal relationship changes provoke family instability and reliance on extended kin. Mothers’ transitions contribute to “network fatigue” and homelessness.