In this study, we investigate the relationship between product diversification and hotel property performance as well as the moderators of this relationship in the urban lodging market. Using stochastic frontier analysis with panel data, we calibrate the efficiency scores of 377 urban hotels in Beijing from 1994 to 2005. We then investigate the impact of product diversification on performance as measured by efficiency score. Results from panel data models indicate that the degree of product diversification exhibits a positive relationship with hotel performance. Hotel location, diversification expansion rate, and foreign ownership operation are found to be significant moderating factors determining the effect of product diversification. Specifically, hotels that (a) are located farther from the city center, (b) expand diversification more slowly, and (c) are domestically owned are more likely to leverage the benefits stemming from product diversification. We provide a series of practical evaluation modules to help hoteliers improve performance. (C) 2016 Elsevier Ltd. All rights reserved.