Schedule an evaluation with a licensed California healthcare professional and explain how your animal helps you manage disability-related challenges. Relevant medical information can help your clinician understand your needs. For emotional support dog letters, California generally requires a clinical evaluation and a minimum 30-day client-provider relationship, with a limited exception.
If your provider determines that an ESA recommendation is appropriate, they may issue documentation supporting your housing accommodation request. Approval isn't guaranteed, but a legitimate assessment gives you a clearer understanding of your options.