SAN FRANCISCO — An affiliate of San Francisco-based The Swig Company has acquired a 105,225-square-foot data and telecommunications building, which is located at 274 Brannan St. in San Francisco’s Transbay Terminal/South of Market area. Built in the 1920s, the nine-story property originally served as a maintenance facility for Pacific Railroad. The building was later converted into an office property and then to its current state as a state-of-the-art, fiber-rich telecommunications facility. Tony Crossley and David Brandwein of Colliers’ San Francisco office represented the seller, an affiliate of Yale Properties USA Inc. Mitch Thurston and Andy Ahlers of Capmark Finance Inc.’s San Francisco office arranged acquisition financing for the transaction. The acquisition price was not disclosed.