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is to renew your ESA annually to avoid the inconvenience of being denied housing or boarding an aircraft due to outdated documentation.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 Emotional Support Animals: Legal Facts You Need to Know 5 Breeds of Dogs with the Longest Lifespan What are the Friendliest Pets? Do Dogs Get Sad When You Yell at Them? [therapypet_step1_form show_in_mobile="1"]