During his studies and stay in North America he met the best architects in the world as Walter Gropius, Mies van der Rohe, Louis Kahn, IM Pei, Yamasaki, Skidmore Owings & Merril, Victor Gruen, Alvar Aalto, Morris Lapidus and Constantinos Doxiadis, the father of ekistics and integral urban planning that already included sustainability.

[5] During his stay in the United States the study already had 30 architects for the design of buildings, houses and large-scale works such as the Hotel Tapatio or the Plaza de Toros Nuevo Progreso, so he traveled to Mexico every five weeks.

[9] With a younger generation of architects at the beginning of 2000 and with his son Juan Carlos Gomez Castellanos as director, the firm moved to a new level of internationalization strengthening its presence in Panama, Dominican Republic and Puerto Rico through multidisciplinary proposals and large structures that integrated into nature.

[10] The firm has offices in Guadalajara, Mexico City, San Antonio and Austin (Texas), and Panama and also works in Colombia, Nicaragua, Honduras, the Dominican Republic, and Florida.

Urban Jal partnered with the Japanese corporation Marubeni, the third largest in Japan after Mitsubishi and Mitsui, conforming the construction company "Surban", and building "Residencial la Cruz".