“…In turn, household asset portfolios that are dominated by housing wealth tend to be underdiversified, exposing households to large risks since house prices are very volatile (Ferreira et al, 2010, andCatte et al, 2004), and transaction costs associated with purchase, sale, and relocation tend to be significant. 1 While it is intuitive that in the face of large transaction costs house-price-induced fluctuations in home equity may be associated with lock-in effects restricting residential mobility (Engelhardt, 2003;Van Veldhuizen et al, 2020), additional effects can be expected. Two recent strands of literature focus on either mortgage default decisions (Bajari et al, 2011, Gerardi et al, 2018, and Guiso et al, 2013, or on the propensity to divorce (Farnham et al , 2011, Rainer and Smith, 2010, and Klein 2017.…”