 Weitz married Ruhama and their eldest son, Ra'anan, was born in 1913.Two years later, in 1915, Yosef Weitz was appointed foreman of the Sejera training farm (now Ilaniya) in the Lower Galilee.Weitz helped to found Yavniel, one of the first pioneer colonies in the Galilee, and later, the Beit Hakerem neighborhood in Jerusalem.