General Land Office Building (Austin, Texas), first building designed by a university-trained architect, built in 1857
Pioneer building, was the tallest building west of Chicago, surpassing St. Paul's previous tallest, the Globe Building when it was completed in 1889. Also early home of Minnesota's first newspaper, now known as the Pioneer Press, and home of the world's first telephone answering service, implemented in 1927
Torrey Building, Duluth's first high rise. It was the first building in Minnesota outside the Twin Cities to reach 12 floors aboveground. Completed in 1892
Hamilton Building,first building in Portland designed in the Classical Revival style, completed in 1893
Missouri State Teachers Association Building , first building in the United States built specifically to house a state teachers association built in 1927
Roosevelt Park (senior housing), first senior housing project in the United States, built in 1936
Roy G. Cullen Building, first building on a campus of higher education in the United States with air conditioning, built in 1938
Man Yee Building, first building in Hong Kong with escalators, built in 1957.
Greystone Manor , the first condominium in the Continental United States was built in Salt Lake City, Utahn by attorney Keith B. Romney built In 1960
P2 (panel building), type of residential panel building found in former East Germany, first building of this type was built in 1961
Brentwood Village in Edmonton, Alberta, the first condominium development in Canada registered in 1967.
Horizon House, Ottawa The first high-rise condominium development in Ontario registered in 1967.
John S. Chase , in 1952, became the first African American to enroll and graduate from the University of Texas at Austin School of Architecture and later became the first African American male licensed to practice Architecture in the state of Texas. In addition, he was also the first African American admitted to the Texas Society of Architects and the Houston Chapter of the American Institute of Architects (AIA). In 1970 John S. Chase became the first African American Architect to serve on the United States Commission on Fine Arts and in 1970, he co-founded the National Organization of Minority Architects (NOMA), (along with 12 other black architects).
List of firsts in architecture Wikipedia