We’re optimists. We know that ingenuity creates new possibilities.

We are a collective of designers, urbanists, and energy geeks working together to design a sustainable future. We believe that the built environment can accelerate the clean energy transition and help stop carbon emissions. The key is to create healthy, zero-carbon buildings at scale, and Passive House design provides a science-proven way to do it. That is why we train our entire staff in Passive House design. 

Press & Awards

Sandy Keenan, New York Times 08.14.13

The Passive House: Sealed for Freshness

NEW YORK TIMES — When you visit Sloan and Jennifer Ritchie’s new passive house in the Madison Park neighborhood here, it takes a while to notice all the things you’re not hearing. Look out the ...
Amanda Waltz, Pittsburgh City Paper 10.17.18

Carnegie Library gives Carrick branch an energy-efficient facelift with Passive House design

PITTSBURGH CITY PAPER — The CLP Carrick location will soon become the first certified Passive House library in the country. After five years of planning, designing, development, and ...
Marc Stiles, Puget Sound Business Journal 08.15.18

Washington's first passive house apartment building opens soon in Seattle

PUGET SOUND BUSINESS JOURNAL — Cascade Built, which constructed Seattle's first "passive house" townhouse project, is about to open a much larger apartment building. Pax Futura has 35 ...
Zack Semke, NK Architects, Archinect 07.21.17

How Passive House Design Can Propel the Clean Energy Transition in Architecture

ARCHINECT — With reversals in US climate policy underway and a US exit from the Paris Agreement announced for 2020, it’s easy to lose sight of the fact that the clean energy transition is ...
More Press
2016
PHIUS Passive Projects Competition, Single Family Winner
2014
Green Builder Home of the Year
AIA National Housing Award for Architecture
Builder's Choice & Custom Home Design Award
2013
Circle of Excellence Top National Architecture Firm
2011
AIA Individual Community Service Award

Working at NK

We’re always on the lookout for talented, mission-driven professionals who aren’t afraid to shake things up. Want to help transform the built environment into one that that sustains people and the planet? Please join us. Submit resume and work samples to [email protected].

Medical

Medical

Vision

Vision

Paid Vacation

Paid Vacation

401k

401k

Flexible Schedules

Flexible Schedules

Transit Passes

Transit Passes

Passivhaus Training

Passivhaus Training