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is to renew your ESA annually to avoid the inconvenience of being denied housing or boarding an aircraft due to outdated documentation.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 Dogs Behavior Problems and Solutions: 6 of the Most Common Why Do Dogs Shake Their Toys? 7 of the Best Vegetables for Dogs to Add to Your Pet’s Diet Top 10 Healthy Dog Food Brands [therapypet_step1_form show_in_mobile="1"]