Template:Buildings along Los Angeles Street from Plaza to 3rd Street

Los Angeles Street was lined with mostly commercial buildings; the southeast end of the business district around Los Angeles and 3rd streets was the Wholesale District. Only a few buildings were notable:

West side south of Arcadia

 * Arcadia Block: southwest corner of Arcadia Street. Built 1858, razed in 1927.
 * Hellman Block: in 1870, banker and University of Southern California founder Isaias W. Hellman erected the Hellman Block at the northwest corner of Los Angeles and Commercial streets. This is one of several Hellman Blocks or Hellman Buildings in the city.

East side south of Aliso

 * Bell Block was at the southeast corner of Aliso Street. It was General John C. Fremont's headquarters and the first Los Angeles City Hall. Captain Alexander Bell and Mellus lived here (Francis Mellus married a niece of Mrs. Bell's). It was taken over by General Fremont for his headquarters and thus became the state capital for the short period of his acting as governor. The Los Angeles City organization was formed in this building in 1850.
 * Mellus Row, adjacent to Bell Block on the south
 * Hellman, Haas & Co. grocers (a partnership of Abraham Haas and Herman W. Hellman), the predecessors of Smart & Final. Located in the 1880s and 1890s at 218-224 (pre-1890 numbering, post-1890 numbering: 318-324) N. Los Angeles St., adjacent to Mellus Row on the south. Not to be confused with the Haas Building.
 * Between Aliso and Temple streets on the east side of Los Angeles St. at #300 is the Federal Building, opened in 1965-6, architect Welton Becket. Temple was extended east of Main Street between Aliso Street and a street that was known as both Requena and Market street. Adjacent and to its east is the Edward R. Roybal Federal Building and United States Courthouse, completed in 1992.
 * Between Temple and First streets is Parker Center, the Los Angeles Police Department headquarters from 1955–2009
 * At the southeast corner of First Street, Little Tokyo begins. At this corner was the Tomio Department Store, and two more Japanese-American department stores, the Asia Company and Hori Brothers were located east of it on 1st Street during the 1920s. Now the site of Weller Court and the DoubleTree by Hilton Hotel Los Angeles Downtown, formerly the New Otani Hotel.