The location of properties being exchanged is very important. Real property located outside the United States does not qualify as a 1031 Exchange property if exchanged for real property located in the United States. In the US, real property means property located within the fifty states and the District of Columbia. Property located in Guam, Puerto Rico, and U.S. possessions are treated as foreign real estate and do not qualify.
However, real estate located in the U.S. Virgin Islands may qualify for §1031 treatment when traded for U.S. real estate. Please see your CPA or attorney for more information in your particular case!