Does ESA Letter Have to Be Renewed March 11th, 2021 Yes. ESA letters are valid for one year. The recommended practice is to renew your ESA annually to avoid the inconvenience of being denied housing or boarding an aircraft due to outdated documentation. Related Posts Do Dogs Know They’re Dying? How to Verify an ESA Letter: A Guide for Landlords Dog Breed DNA Tests: Which Tests Are Best? Dog Flea Home Remedy Guide [therapypet_step1_form show_in_mobile="1"]