January 1 – Milam Building in San Antonio, Texas, designed by George Rodney Willis, the tallest brick and reinforced concrete structure and first office building with built-in air conditioning in the United States at this date.
The Royal Horticultural Society New Building, a second exhibition hall for The Royal Horticultural Society, designed by Easton & Robertson, is completed in Westminster, London, the first in the United Kingdom to have a parabolic curved concrete roof structure.
^Graf, Victor (February 5, 1978). "A.E. Doyle: He set the trend of Portland architecture in the '20s". The Sunday Oregonian. Northwest Magazine section, pp. 4–7.