In 1903, he formed Eidlitz & McKenzie with Andrew McKenzie, who had been a construction supervisor and engineer for his father's firm. Eidlitz & McKenzie was one of the first architecture firms that put architects and engineers on equal footing.
In 1903, he founded Eidlitz & McKenzie alongside Andrew McKenzie, who had previously held positions of authority in construction supervision and engineering at his family's business. This innovative architecture firm was notable for its equal footing arrangement between architects and engineers.