OUR HISTORY
TSP is a multidisciplinary design firm offering architecture, engineering, planning, and interior design expertise all under one roof. Founded in 1930 as a one-man shop, we’ve grown into a regional, employee-owned leader serving the Upper Midwest. Our team delivers thoughtful, integrated solutions for K–12 and higher education, healthcare, civic, and commercial environments. With a focus on collaboration and community impact, we design spaces that foster connection, function with purpose, and stand the test of time.
SPITZNAGEL MILESTONES
Our firm’s founder gave shape to spaces where people lived, learned, worshiped, worked, played, and healed.
ON TSP’S 95TH ANNIVERSARY, IMAGINING A CONVERSATION WITH OUR FOUNDER
Harold Spitznagel has been gone for 50 years, but you wouldn’t know it imagining what he’d say about his firm turning 95.
