“…24 LTV ratios exceeding one indicate negative equity, where the borrower is underwater or owes more than the value of the underlying housing asset. Negative equity can lead homeowners to significantly cut back on improvements as well as mortgage principal payments (Olney, 1999;Melzer, 2013) and substantial evidence indicates borrowers strategically default when houses go underwater (Deng, Quigley, and Van Order, 2000;Bajari, Chu, and Park, 2008;Bhutta, Dokko, and Shan, 2010;Ghent and Kudlyak, 2011;Guiso, Sapienza, and Zingales, 2013;Chan, Haughwout, Hayashi, and van der Klaauw). All of these studies focus on the LTV ratio, which is composed of two parts-loan amount and house value-both crucial to the construction of an accurate measure.…”