About Stemper AC

Founded in 1988, Stemper Architecture Collaborative (previously S.M. Stemper Architects) is distinguished by its pragmatic approach to building design and by its technical expertise in building envelope renovation.



We help clients meet their objectives by offering design solutions that are: technically and economically feasible; incorporate durable and environmentally friendly design elements; and that greatly improve building occupants’ experience.

“Everyone has high praises for the renovation of Cedar Hall – I continually hear great feedback from the staff, students and maintenance crew. We are so pleased with the quality of design, finishes, workmanship, and how seamlessly the upgrades blend with the GRCC aesthetic... Thank you for your efforts!”
Sam Ball
Director of Capital Projects
Green River Community College
“Your efforts, your insights and your staying late to make sure there was clear, common understanding amongst all of the team members was very much appreciated by me. I am grateful and look forward to implementing these projects to create success for Seattle Public Schools. Simply put, thank you.”
Richard Best
Seattle Public Schools
“During the last site meeting, the project’s GC commented that their sub-contractors were very happy with the level of details provided in our drawings. In their words, they rarely encountered such high level of professionalism. Kudos to S.M. Stemper Architects for working with the consultants and owner to produce quality documents.”
Bernd Dreyer
Westmark Construction
“Stemper AC has been professional in all of our dealings. They offered a great balance of knowledge of the building and design industry along with great costumer service. They listened and offered suggestions, and at the same time respected our wishes regarding the design elements we knew we wanted. We don’t feel like we were talked into anything that didn’t seem to fit for us. If questions came up that there were no immediate answers for, there was a quick follow-up of information. Their timeliness and follow through is to be commended.”
Rita Fox
Community Transit
Administrative Assistant