What is already known on this topic: Allergy/immunology clinical practices are not immune to natural disasters or global pandemics, which may force service reduction or abrupt changes in practice. What does this article add to our knowledge: Home allergen immunotherapy can be cost-effective in highly selected patients under pandemic shelter-in-place conditions provided home systemic reactions to immunotherapy rates remain stable; however, careful patient selection is critical. How does this study impact current management guidelines: This cost-effectiveness analysis demonstrates potential feasibility of allergen immunotherapy for appropriately screened patients. This may help inform decision making regarding how to provide this valuable allergy service in a current or future natural disaster or pandemic. BACKGROUND: Allergen immunotherapy (AIT) is safe and effective but is typically administered under strict clinic observation to mitigate the risk of a systemic reaction to immunotherapy (SRIT). However, in the setting of the global coronavirus disease 2019 pandemic, alternative care models should be explored. OBJECTIVE: To evaluate the cost-effectiveness of home immunotherapy self-administration (HITSA) in a highly