Performance Building Supply (475) is a catalyst in the transformation
of the US
construction industry to high-performance, ecological, low-energy
enables greater occupant
comfort and health, and more durable, resilient, and sustainable
enables building energy efficiency improvements
required to dramatically reduce our energy demand and address our
The name “475”
is a reference to the heat demand requirement of the International
House Standard, 4.75 kiloBTUs per square foot per year - representing
approximately a 90% reduction in heating energy demand from average
our purpose 475 offers, exclusively to the US market, carefully
products that focus on what matters most in high-performance,
insulation, fully integrated openings, and a predictably calculated
by leading German
companies like Pro Clima, Lunos, Gutex, Lamilux and the Passive House
the products have been proven in the development of the German
market over the past two decades and today are critical components in
low-energy building around the world and across the US.
founded by architects, for architects, builders, engineers and other
is built on a business-to-business
e-commerce platform where the public pricing on the website is the
and components can be purchased 24/7.
sales people work directly for 475,
cutting out intermediate layers and providing direct, knowledge based,
support and distribution.
headquartered at 131 Union Street, Brooklyn, New York - and is
building a nationwide sales force and distribution network to ensure
knowledge based solutions.
is based on a virtuous circle of knowledge development.
It starts with our fundamental appreciation
for building science and the ongoing application of building science to
world needs. We
are constantly collecting
information: reading, visiting job sites, conducting tests, speaking
architects, builders and owners.
then processing this information to determine what’s working, what
what’s relevant and what is not - and out of that, produce our
synthesis of the
information in writings, details and illustrations.
We offer our writing, details and
illustrations to our professional audience to use, customize and for
them to provide
customer feedback forms
the basis for further information collecting and the ongoing
development of our
details, writings, service and support.
circle of development is a
deep collaboration we are committed to with professionals across the US
475 began in
a conversation between Ken Levenson and Floris Keverling Buisman while
on the Merritt Parkway back to Brooklyn after completing a blower door
a Passive House retrofit project in Westport Connecticut. On that drive,
Ken, a registered NY
architect since 1993, and Floris, a Dutch trained architect and
science consultant, discussed their realization that the US building
industry didn’t seem to care much about low-energy/high-performance
about providing the products and knowledge support required for it. By the time they crossed
Bridge they had concluded that not only did the US construction market
such knowledge based high-performance materials but that they could do
growing carefully with employees committed to ecological
Klein, our first
regional sales consultant is also an architect with professional
low-energy and Passive House construction.
475’s Creative Director and communications manager, John
studied sustainability at the City College of New York, and the
Operations, Patrick Jaojoco is a recent environmental studies graduate
CEO / Technical Director, CPHC, LEED AP
Floris has a Master's degree from the Delft University of Technology, School of Architecture, The Netherlands. He built the Lucy House at the Rural Studio, worked at Common Ground Community, and on Mayor Bloomberg’s PlaNYC Green Code Task Force. Floris is a Certified Passive House Consultant, WUFI-ORNL instructor, and a founding board member of New York Passive House. Floris is an adjunct professor at The City College of New York and has been a guest critic at Pratt Institute and Columbia University.
CFO / Sales Director, AIA, CPHD
graduated from Pratt Institute in 1989 and has been a registered
architect in New York State since 1993. Ken is a Certified Passive
House Designer, a founding board member of the National Passive House
Alliance and of New York Passive House. Ken regularly lectures on the
Passive House standard.
Regional Sales Consultant for New England, CPHC, LEED AP
Oliver graduated from Dartmouth College in 1993 with a Master
of Science and then in 2008 from Boston Architectural College with a
Master of Architecture. Oliver is a registered architect in
Massachusetts, a Certified Passive House Consultant and a LEED
Accredited Professional. Oliver brings to his sales work a deep concern
for building science and sustainability.
John began his career in sustainability planning in 2009 when, inspired
by the book Cradle to
Cradle: Remaking the Way We Make Things,
he became involved in co-authoring the first Climate Action Plan for
The Evergreen State College in Washington State. He has since initiated
or collaborated on small- and large-scale sustainability plans for
public transportion and local government operations in the Pacific
Northwest before moving to New York City and catching the Passive House
bug. He holds a degree in Sustainability Planning from The Evergreen
State College and a Masters in Science degree
from The City College
of New York's Sustainability in the Urban Environment program where he
focused on innovative sustainable building strategies and building
Director of Operations
Patrick Jaojoco graduated Cum Laude with a Bachelor of Arts in
Environmental Studies and English Literature from New York University,
where his studies focused on environmental ethics and sustainable
development. Patrick also writes for and manages an environmental art,
media, and design blog, the Artvironmentalist.