TY - JOUR AU - Glaeser,Edward L. AU - Gyourko,Joseph TI - Arbitrage in Housing Markets JF - National Bureau of Economic Research Working Paper Series VL - No. 13704 PY - 2007 Y2 - December 2007 UR - http://www.nber.org/papers/w13704 L1 - http://www.nber.org/papers/w13704.pdf N1 - Author contact info: Edward L. Glaeser Department of Economics 315A Littauer Center Harvard University Cambridge, MA 02138 Tel: 617/495-0575 Fax: 617/495-7730 E-Mail: eglaeser@harvard.edu Joseph Gyourko University of Pennsylvania Wharton School of Business 3620 Locust Walk 1480 Steinberg-Dietrich Hall Philadelphia, PA 19104-6302 Tel: 215/898-3003 Fax: 215/573-2220 E-Mail: gyourko@wharton.upenn.edu AB - Urban economists understand housing prices with a spatial equilibrium approach that assumes people must be indifferent across locations. Since the spatial no arbitrage condition is inherently imprecise, other economists have turned to different no arbitrage conditions, such as the prediction that individuals must be indifferent between owning and renting. This paper argues the predictions from these non-spatial, financial no arbitrage conditions are also quite imprecise. Owned homes are extremely different from rental units and owners are quite different from renters. The unobserved costs of home owning such as maintenance are also quite large. Furthermore, risk aversion and the high volatility of housing pries compromise short-term attempts to arbitrage by delaying home buying. We conclude that housing cannot be understood with a narrowly financial approach that ignores space any more than it can be understood with a narrowly spatial approach that ignores asset markets. ER -