In the last five years , new condo and rental apartment towers have fueled a renaissance in the working-class enclaves of Union City , N.J. , and Weehawken , N.J. , which have at least 30 condo projects recently completed , under construction or in the planning stages ; and in once-depressed downtown areas of White Plains and New Rochelle in Westchester County , where three condo towers carry Donald Trump 's name .