These adobe-style structures are on 38th Avenue N, between Haines Road and MLK Street. The avenue runs through the
Allendale Terrace neighborhood, a high-ground section of St. Petersburg with large estate homes built in the 1920s and 1930s.
Bonus Fun Fact: the link above to the city's website reveals that before the currently-named Dr. Martin Luther King Jr. Street N was Ninth Street, it was known as "Euclid Boulevard".