Born in Hamburg, the artist initially trained as a decorative painter. He subsequently studied at the Hamburg Academy of Fine Arts as well as at the educational institution of the Museum of Decorative Arts in Berlin as a student of Max Seliger. From 1900 onwards, he worked on the facade paintings of the German pavilion for the World Exhibition in Paris under the leadership of Richard Boehland. Then Eberhardt worked in a studio for decorative painting in Berlin for two years, during this period he predominately created religious art. In addition to this, he copied the old masters, which were exhibited in the Berlin museums.

In 1904 he settled in Hamburg as a freelance painter and draughtsman for interior decorations. Until 1909 he was involved in the mural paintings of the banqueting hall of Hamburg’s city hall, which were instructed by Hugo Vogel; for this Eberhardt received as an award a coin from the 16th century by the Hamburg Senate.

Eberhardt is primarily known for his interior decorations, landscapes and drawings; his works can for example be seen today at the Hamburger Kunsthalle.