Seth Donnell is a practicing and licensed architect in Colorado and Arizona. He is a co-founder of the Denver-based firm Catalyst Architecture, Planning, and Development. He has also worked on projects along the front range of Colorado and throughout the U.S. for roughly a decade. Seth obtained a Bachelor of Environmental Design degree from Texas A&M University and a Master of Architecture degree from the University of Colorado Denver. While attending CAP as a masters student, he participated in the ColoradoBuildingWorkshop program and was an integral part of the team that completed the award-winning Red Sand Cabins near Bluff, Utah.
Seth joined CAP as a Lecturer for architectural design studios in 2025.

Adams Street Residence

ColoradoBuildingWorkshop 2014, Redsand Cabins

Wheat Ridge Residence