The article presents views of several U.S. business executives on mixed-use development which is a growing trend and is getting into secondary markets. Topics discussed include views of Christopher Leinberger, an authority in the U.S. metropolitan development, on urbanization being a part of mixed use development; comments from senior vice president at Urban Land Institute (ULI) Dean Schwanke on trend in urban apartments growth; and secondary markets aiding people who lose homes in recession. INSET: Downtown Des Moines Charts Growth.