Draftsman, Washington, DC, before 1953; Draftsman, Welton Becket and Associates, Los Angeles, CA, 1953-1956; Part-time Draftsman, John Lautner, Architect, Los Angeles, CA, 1953-1965; Construction Superintendent on the Kenneth Reiner House, Silvertop, Silver Lake, Los Angeles, CA, 1956; assisted on 30 other projects in the Lautner office over 12 years;

Zebert moved to CA in 1953 from Washington, DC; he lived in Marina del Rey, CA, in 1995 and in HarborPlace Tower, Long Beach, CA, c. 2005;