Greenamyre Rentals Greenamyre Rentals is Leavenworth and Lansing's largest property rental company that owns and manages over 270 residential units and 275,000 sq. ft. of commercial space. Since 1965, we have provided quality apartments, duplexes, town homes, office and retail space to our tenants. In 2012, we expanded our services to include 3rd party property management services. Come see what we have to offer.