NK Architects now has the most Certified Passive House Consultants and Designers of any firm in North America

As reported recently by Vancouver, BC-based Pembina Institute, North America is experiencing exponential growth in the design and construction of Passive House projects: buildings that meet the world’s most stringent energy efficiency standard.

With this growth in Passive House design and construction has come an acceleration in Passive House training among architecture firms focused on sustainable design, sparking a friendly rivalry between companies. I'm proud to report that NK Architects just claimed pole position in this high performance design training race. On Monday, we received results from Germany’s Passive House Institute for the recent Certified Passive House Consultant and Designer examination.

NK now has 21 CPHCs and CPHDs, the highest number of any firm in North America.

This developments builds on the firm’s commitment to Passive House design, including the design of Seattle’s first certified Passive House, Park Passive, a custom home that won the national 2014 Housing Award from American Institute of Architects and the 2016 Passive Projects Design Award from Passive House Institute US (PHIUS). We now have several major multifamily Passive House projects–and one Passive House library–underway between our two offices:


  • Morningside Crossing: a Passive House retrofit and addition to an elementary school, to become 46 units of senior housing.
  • Glassport: another Passive House retrofit and addition to an elementary school, to become 55 units senior housing.
  • Carrick Library: a two-story Passive House replacement of the outdated Carrick Branch of the Carnegie Library of Pittsburgh.


  • Pax Futura: a multifamily Passive House building in the Columbia City neighborhood, with 32 studio and one-bedroom apartments and 3 live/work units.
  • Uptown Passive House Apartments: a multifamily Passive House building in Lower Queen Anne with 56 studio, 1, and 2-bedroom units, as well as 3 live/work units.
  • 11th and Republican: a 20-unit Passive House retrofit and new multifamily building with a rooftop solar array that connects an historic Capitol Hill home with a modern new building.

Congratulations to our Certified Passive House Designers and Consultants who make these projects possible!:

  • In Pittsburgh: Jim Bischoff, Loren Brandford, Marc Ford, Rebecca Griffith, Shanna Kovalchick, Lauren McCunney, Brandon Nicholson, and Alyssa Swisher.
  • In Seattle: Marie Caryl, Suzi Davison, Emily Evenson, Steve Fischer, Alec Gardner, Joe Giampietro, Christine Goodwin, Rachel Hedlof, Peggy Heim, Katie Luedeman, Briana Peretti, Brittany Porter, and Alyse Zimmer.