Colombo Market Arch is an unprotected segment of the historic Colombo Market building.

The ordinance designates Colombo Market Arch as a Landmark under Article 10 of the Planning Code.

The designation is to preserve the Arch, a significant remnant tied to San Francisco's Italian-American community and the city's produce district development.

Colombo Market Arch is the sole surviving part of the Colombo Market building, historically significant for its associations and for being the city's first purpose-built enclosed wholesale market for agricultural products.

The ordinance was reviewed by the Planning Department and the Historic Preservation Commission, which recommended the Landmark designation, and the Board of Supervisors affirmed this designation.

To ensure Colombo Market Arch's characteristics are preserved, specific features such as its one-story height, red brick masonry, brick piers, and other architectural elements are mandated to be preserved or replaced in kind as necessary.