CBRE, Inc. presents a rare opportunity to acquire a premier, free-standing office building at 507-511 Mission Street, in the heart of South Pasadena’s historic Mission District. First time on the market in over 40 years, this single-story property was originally constructed in 1927 and comprises 6,850 SF across three suites on 10,507 SF of land. High ceilings and flexible floor plans make the building well-suited for professional, creative, legal, or medical services — and its single-story layout offers a rare combination of accessibility and adaptability for a single owner/user or continued multi-tenant investment. The property is currently 100% occupied, with two leases expiring in 2027 that will free up 4,800 SF for owner occupancy or re-leasing at market rates. The smallest suite (700 SF) expires March 2027 and the largest (4,100 SF) expires December 2027, while one long-term tenant occupying the remaining 2,050 SF is under lease through 2034, providing stable in-place income. Tenants cover all utilities based on occupancy, keeping operating expenses lean. The property sits within the DTSP Mixed-Use Core Zone and offers 11 surface parking spaces. Positioned along Mission Street with unmatched walkability to Trader Joe’s, the weekly Farmers Market, and South Pasadena’s celebrated dining and retail scene, the building also offers Metro A Line access to Downtown Los Angeles. South Pasadena’s strong schools, high median incomes, and consistently low inventory have made it one of the most sought-after submarkets in the San Gabriel Valley.