Upscale development in Columbia Heights circa 1900 was designed to attract upper level managers of the Federal government, U.S. Supreme Court justices, and high-ranking military officers.
An imposing mansion known as "Belmont" marked the entrance to the neighborhood between Florida and Clifton Streets.
The mansion was emblematic of the confidence that the affluent placed in the concept that Columbia Heights represented the ideal suburb.
In the early 1900s, Columbia Heights was the preferred area for some of Washington's wealthiest and most influential people.
Residents included authors Jean Toomer, Ambrose Bierce, Sinclair Lewis, Chief Justice Melville Fuller, and Justice John Marshall Harlan.

In 1901, the Commissioners of the District of Columbia renamed streets all over the District in accordance with a newly adopted street-naming system.
In Columbia Heights, Clifton Street, Roanoke Street, Yale Street, Princeton Street, Harvard Street, Columbia Road, Kenesaw Avenue, Kenyon Street, Dartmouth Street, and Whitney Avenue were renamed Adams Street, Bryant Street, Channing Street, Douglas Street, Evarts Street, Franklin Street, Girard Street, Hamlin Street, Hooker Street, and Irving Street, respectively.

In 1902, there was a building boom in North Columbia Heights, with the expansion of the streetcar down 11th St, 14th St and 16th St. Homes were being built for between $2,000 and $5,000 and a total of five million dollars' worth of homes were being built.

In 1904, the Columbia Heights Citizen's Association published an illustrated brochure entitled "A Statement of Some of the Advantages of Beautiful Columbia Heights." (
PDF ) The publication describes Columbia Heights as a "residential section populated by public and spirited citizens."
Residents at that time were "ever alive to the mental, moral, and spiritual advancements of their homes surroundings."
The neighborhood organization sponsored competitions for landscaping house lots and offered prizes to the best kept lawn and garden, at the same time fought the erection of street poles and overhead telegraph and telephone lines.
1904 was also the year that Congress authorized changing the names of streets to align with the alphabetical and orderly naming convention of the Old City (i.e., below Boundary Street, now Florida Avenue).
The name changes were put into effect the following year.

By 1914, four street car lines served the section providing transportation to downtown Washington in twenty minutes.
The neighborhood also became the home of the Washington Palace Five professional basketball team.

The popularity of the neighborhood resulted in the construction of several large apartment buildings during the beginning of the twentieth century that changed the suburban character of the area into a more urban and densely populated district.
As of mid-century, however, Columbia Heights retained much of its upscale residential appeal, supporting establishments such as the ornate Tivoli Theatre movie house (completed in 1924).
J.W. Marriott and his wife opened an A&W root beer franchise on 14th street in 1927, before creating the Marriott hotel chain.
The neighborhood was adjacent to Washington's thriving middle-class black community and came to be home to some of its most notable citizens by the 1930s.
Duke Ellington, who had grown up in Shaw, purchased his first house at 2728 Sherman Avenue in Columbia Heights.
Marvin Gaye briefly lived in the neighborhood and attended Cardozo Senior High School.

 
In 1949, during the era of racial segregation in the public schools, Central High School, a white high school that bordered the southern edge of Columbia Heights, did not have enough students.
It was renamed as Cardozo High School and designated as a "colored" high school to accommodate the growing African-American population in the neighborhood.
Significant demographic changes began in the late 1940s when African-American residents began to buy apartment buildings previously owned by whites, and in the 1950s blacks bought individual homes in ever increasing numbers.
The neighborhoo
Upscale development in Columbia Heights circa 1900 was designed to attract upper level managers of the Federal government, U.S. Supreme Court justices, and high-ranking military officers. An imposing mansion known as "Belmont" marked the entrance to the neighborhood between Florida and Clifton Streets. The mansion was emblematic of the confidence that the affluent placed in the concept that Columbia Heights represented the ideal suburb. In the early 1900s, Columbia Heights was the preferred area for some of Washington's wealthiest and most influential people. Residents included authors Jean Toomer, Ambrose Bierce, Sinclair Lewis, Chief Justice Melville Fuller, and Justice John Marshall Harlan.
In 1901, the Commissioners of the District of Columbia renamed streets all over the District in accordance with a newly adopted street-naming system. In Columbia Heights, Clifton Street, Roanoke Street, Yale Street, Princeton Street, Harvard Street, Columbia Road, Kenesaw Avenue, Kenyon Street, Dartmouth Street, and Whitney Avenue were renamed Adams Street, Bryant Street, Channing Street, Douglas Street, Evarts Street, Franklin Street, Girard Street, Hamlin Street, Hooker Street, and Irving Street, respectively.
In 1902, there was a building boom in North Columbia Heights, with the expansion of the streetcar down 11th St, 14th St and 16th St. Homes were being built for between $2,000 and $5,000 and a total of five million dollars' worth of homes were being built.
In 1904, the Columbia Heights Citizen's Association published an illustrated brochure entitled "A Statement of Some of the Advantages of Beautiful Columbia Heights." (PDF ) The publication describes Columbia Heights as a "residential section populated by public and spirited citizens." Residents at that time were "ever alive to the mental, moral, and spiritual advancements of their homes surroundings." The neighborhood organization sponsored competitions for landscaping house lots and offered prizes to the best kept lawn and garden, at the same time fought the erection of street poles and overhead telegraph and telephone lines. 1904 was also the year that Congress authorized changing the names of streets to align with the alphabetical and orderly naming convention of the Old City (i.e., below Boundary Street, now Florida Avenue). The name changes were put into effect the following year.
By 1914, four street car lines served the section providing transportation to downtown Washington in twenty minutes. The neighborhood also became the home of the Washington Palace Five professional basketball team.
The popularity of the neighborhood resulted in the construction of several large apartment buildings during the beginning of the twentieth century that changed the suburban character of the area into a more urban and densely populated district. As of mid-century, however, Columbia Heights retained much of its upscale residential appeal, supporting establishments such as the ornate Tivoli Theatre movie house (completed in 1924). J.W. Marriott and his wife opened an A&W root beer franchise on 14th street in 1927, before creating the Marriott hotel chain. The neighborhood was adjacent to Washington's thriving middle-class black community and came to be home to some of its most notable citizens by the 1930s. Duke Ellington, who had grown up in Shaw, purchased his first house at 2728 Sherman Avenue in Columbia Heights. Marvin Gaye briefly lived in the neighborhood and attended Cardozo Senior High School. 
 
In 1949, during the era of racial segregation in the public schools, Central High School, a white high school that bordered the southern edge of Columbia Heights, did not have enough students. It was renamed as Cardozo High School and designated as a "colored" high school to accommodate the growing African-American population in the neighborhood. Significant demographic changes began in the late 1940s when African-American residents began to buy apartment buildings previously owned by whites, and in the 1950s blacks bought individual homes in ever increasing numbers. The neighborhoo
Columbia Heights (Washington, D.C.)