Eugène Van Dievoet is the son of Ernest Jean-Louis Van Dievoet (Brussels, 16 July 1835 - Saint-Gilles, 28 August 1903) and Léonie Joséphine Françoise Most (Antwerp, 14 July 1838 - Brussels 1943), daughter of Ferdinand Gustave Adolphe Most and Ghislaine Philippine Pauline Delsart; and the grandson of Eugène Van Dievoet and Hortense Poelaert, sister of the famous architect Joseph Poelaert.

He married Léonie Caroline Catherine Quarez, born in Liège on 22 May 1865 and died in Woluwe-Saint-Lambert, rue Vergote 30, on 6 December 1944, daughter of Philippe Guillaume Quarez and Catherine Lambertine Marie Ogis.

Eugène Van Dievoet began his career as a military architect and trained at the Royal Military Academy (48th class, engineering, 1880–1885).

He was Major of military engineering, engineer, professor at the Royal Military Academy and member of the Royal Society of Archeology of Brussels since 1936.

[3] After his military activities, he became a civil architect (living in rue Vergote 30) and built many houses and apartment buildings in Art Deco style or Beaux-Arts in Brussels.