Rare opportunity to acquire a single-tenant, single-building United States Post Office (USPS) net-lease property in the heart of Great Neck, NY. The USPS has occupied this location continuously since 1960, demonstrating over six decades of operational commitment to this site. The property consists of a 4,802 SF ground-floor building plus a 336 SF exterior ramp, situated on a 13,797 SF lot along Middle Neck Road, one of Great Neck’s primary commercial corridors. A new 5-year lease extension has been executed for the term February 1, 2026 through January 31, 2031. Annual rent is $176,000 with no rent increases during the lease term. Lease structure is Double Net (NN). Real estate taxes are 100% passed through to the tenant. Insurance is landlord responsibility ($9,935 projected for 2026). Roof and structural components are landlord responsibility; all other repairs, maintenance, and utilities are the responsibility of the tenant (USPS). 2026 Pro Forma NOI is $166,065. Asking price is $5,000,000, representing a 3.32% cap rate. This offering is ideally suited for 1031 exchange buyers, family offices, and investors seeking bond-like income, capital preservation, and long-term stability from a federal credit, essential-service tenant.