October 21, 2017


We are proud of our collaborations with our investors, clients, contractors, tenants, and designers and want to take this opportunity to thank them all for what their hard work and honest feedback as we continue to grow. If you (reading this) have any questions about the firms listed at the start of each project, or questions about the parts anybody played in any of our projects, we are happy to provide you with our own feedback and recommendations.

infillPDX was founded by Nicholas Papaefthimiou who continues to lead the design and development efforts. You can read an interview with Nicholas for more information on our vision and perspective.

Nicholas Papaefthimiou | AIA, LEED BD+C

Nicholas Papaefthimiou is a licensed architect and contractor with nearly 20 years’ professional experience across the Unites States and Europe. He holds Masters Degrees in both Architecture and Structural Engineering from the University of California, Berkeley and Bachelor of Science degrees in both Architecture and Urban Planning from the Massachusetts Institute of Technology.  In 2014, he founded infillPDX, a design and research collaborative focused on the development of financially, socially, and environmentally sustainable models of infill housing models to address Portland’s housing crisis.

Nicholas brings the same care and rigor to all of his work, which ranges in scale from award-winning religious and residential architecture to his role as Lead Project Architect for the largest design/build contract in the United States.  He has served on multiple design and awards juries, organized and presented at numerous symposia, and served on several graduate school admission boards.  He currently teaches courses at Portland State University and the University of Oregon in housing design, building science research methods, and structural theory. He lives in SE Portland with his wife and two daughters.