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is to renew your ESA annually to avoid the inconvenience of being denied housing or boarding an aircraft due to outdated documentation.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 7 of the Best Vegetables for Dogs to Add to Your Pet’s Diet Top 5 Dog Adoption Tips How Often Do I Need to Renew My ESA Letter? Flea Tick Frontline Spot on Dogs and Treatment Guide [therapypet_step1_form show_in_mobile="1"]