19 Heron Street presents a rare full-building industrial lease opportunity in San Francisco’s SoMa district. Spanning approximately 6,400 square feet across two levels on a 3,200 square foot lot, the property is located within WMUG – West SOMA Mixed-Use General zoning, allowing for a broad range of compatible commercial, industrial, and creative uses. Originally built in 1923, this reinforced concrete building offers authentic warehouse character paired with flexible functionality. It also holds the rare distinction of being one of the few remaining buildings in San Francisco with an original skybridge, a unique architectural feature that sets the property apart. The ground floor features a large roll-up door, pedestrian entry doors, a secondary glass garage door, open workspace, freight elevator, storage, two half bathrooms, and abundant natural light. The second floor is accessible via two interior staircases, including one that was recently reconstructed with the benefit of permits, and offers a bright open floor plan with one full bath, loft-style storage, skylights, large street-facing windows, and access to the unique pedestrian skybridge. Ideal for warehouse, production, distribution, repair, showroom, studio, design, or other compatible users, the property also benefits from convenient access to I-80, I-280, and Highway 101, as well as a 55-foot height limit. 19 Heron Street is located immediately adjacent to Heron Arts and Mr. S Leather, placing it in one of SoMa’s most distinctive and evolving creative-industrial corridors.