This study reports results from a double-bounded dichotomous choice contingent valuation method (DC-CVM) and choice experiment (CE) study that aimed to examine Macao residents' preferences for alternative solid waste management policy changes in Macao. An empirical comparison of the welfare measures derived from the double-bounded DC-CVM and CE is conducted. There is no significant difference found between the values derived from the two methods. The results suggest that both double-bounded DC-CVM and CE can be successfully implemented for environmental valuation in Macao. This paper could provide the basis for further development of useful ideas on sustainable management of solid waste in Macao. © 2005 Elsevier B.V. All rights reserved.