Floris Keverling Buisman

Chief Executive Officer

Floris has wide ranging expertise in building technology, materials and envelopes. He’s served on NYC Building Code Committees, has certified, consulted on and built several Passive House projects in New York and Vermont, is a LEED AP, a Registered Architect in the Netherlands, and an adjunct professor at The City College of New York. Prior to co-founding 475 Floris spear-headed green building initiatives at Common Ground Community in their NYC supportive affordable housing developments. He also designed and built the Lucy House at Samuel Mockabee's Rural Studio in Alabama. Floris has a dual Master’s degree in Architecture + Real Estate Development from the Delft University of Technology. His kids enjoys riding on the cargo rack of his 1946 dutch grandma bike for drops off at school and his commute to work - while advocating street safety. Join them on bike during Critical Mass on last Friday's of the month at 7pm on Union square.

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Johnny Rezvani

Director of Communications

Johnny began his career in sustainability in 2009 when he became involved in co-authoring the first Climate Action Plan for The Evergreen State College in Washington State. He collaborated on regional sustainability plans in local government in the Pacific Northwest before catching the Passive House bug. He holds a degree in Sustainability Planning from The Evergreen State College and a Masters of Science degree from The City College of New York’s Sustainability in the Urban Environment program. Johnny now lives in Boulder, Colorado, where he enjoys a car-free lifestyle in one of greatest bicycle cities in the country. Johnny is a life-long music lover, and spent a few years of his twenties as a full-time touring musician, currently writing and recording - you’ll currently find his work online under the moniker JD Reverie.

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Matt Cull

Director of Finance

Matt graduated from NYU Tisch School of the Arts in 2005. He then worked as a production accountant at ITV Studios and Vice Media. At Vice Media, Matt became the head of accounting. He is also a critical home repair construction volunteer for Habitat for Humanity NYC and is a Certified Passive House Consultant. Matt is also a licensed small unmanned aircraft aerial system pilot and has flown over many 475 projects as well as shoots, edits and produces 475 videos. Matt is an Ironman triathlete and a beer nerd.

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Philip Miceli

Director of Operations

Phil comes to 475 with a B.S in Industrial Engineering from NY Institute of Technology and an M.B.A. from Hofstra University. After a successful career spanning engineering, consulting, banking, commercial real estate, sales, and marketing (online and offline), Phil decided to follow his passion for sustainability. He earned a professional certificate in Sustainable Design Construction and Development from New York University and a LEED GA accreditation. He is a certified Passive House Consultant and a Certified Passive House Tradesperson. Phil loves to scuba dive with sharks, manta rays and other large animals - diving all over the world from Fiji, to the Caribbean, and Greece.

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Ken Levenson


Ken has been a registered architect in New York State since 1993. He has a Bachelor of Architecture degree from Pratt Institute. Ken is a Certified Passive House Designer, a founding board member of New York Passive House, the National Passive House Alliance and the North American Passive House Network. Ken has served on advisory panels for Urban Green’s 90 by 50 advanced policy report and the Framework Guidelines for Energy Efficiency Standards in Buildings of the United Nations Economic Commission for Europe. When Ken isn’t thinking about Passive House or hanging out with his wife and young daughters, he can usually be found walking their 180 lb Newfoundland dog, Romeo, in Prospect Park.

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Rachel Bernstein

Marketing Associate

Rachel's curiosity for the both built and natural environment was born out of growing up in New Orleans, Louisiana, where unique architecture and environmental issues are ever-present. Rachel graduated with a degree in Environmental Studies and minors in Architecture, Real Estate, and Urban Studies from Tulane University, and went on to complete her Masters of Science in Sustainability with a concentration in Architecture from the City College of New York. She is determined to prove the necessity of mindful building design that bridges the gap between urbanity and sustainability. In her free time, Rachel enjoys yoga, photography, and anything relating to dogs.

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Ann Bui

Sales Assistant

Ann graduated with a degree in architecture from the City College of New York where she developed a strong interest in sustainable design and building practices. With a background in architecture, she implemented passive house design principles into her projects. In her spare time, Ann enjoys paper making, making paper jewelry, and playing the occasional game of tennis.

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Trevor Cook

Product Manager, Lamilux Specialist

Trevor is a designer, fabricator, and manager based in NYC. He graduated from the University of Texas School of Architecture and studied woodworking under Matt Granick, a journeyman taught by Frank Klausz. Trevor has worked at a range of custom fabrication companies including Uhuru and SITU Fabrication, where he managed teams of fabricators, designers, and external vendors to produce $1M+ projects for major tech companies, private clients, and leading museums. Trevor became a Certified Passive House Designer in 2021 and joined 475 to apply his fabrication skills to a more sustainable industry. He loves chairs and their history, bike-packing, nice boots, and quality tools.

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Brenden David

Product Consultant, Western Canada

After graduating from Civil Engineering at the University of Calgary, Brenden focused on Building Science and Restoration as a Project Engineer (P.Eng.) and Manager with prominent Building Envelope consulting firms. Driven to pursue higher performance assemblies and more sustainable solutions Brenden became a Certified Passive House Designer (CPHD) providing Feasibility, Design, and Energy modeling services. Brenden has project experience across Canada including the Lower Mainland, Prairie provinces, and GTA. He enjoys working through a good technical challenge and collaborating on constructable solutions. He likes to stay on the move – cycling, motorcycle trips, skateboarding, and surfing (when he’s not landlocked).

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Akshayaa Kariyakkar

Daylighting Product Consultant

Akshayaa graduated with a degree in architecture from SRM University before acquiring her Master of Science in Sustainability in the Urban Environment at City College. There she took interdisciplinary courses integrating engineering, architecture, and economics, and worked on a year-long research project to bridge the gap between food insecurity and food waste in NYC. Her experiences have led her to believe in a multi-faceted and holistic approach towards Sustainability. Since graduating, Akshayaa has become a member of the Daylight Team at 475 where she focuses on the company's window and door products. In her spare time, she enjoys being creative through literary and artistic means.

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Jeremy Latriano

Daylighting Product Consultant

Jeremy has a Bachelor of Science in Energy Business and Finance from Pennsylvania State University and a Master of Science, Sustainability in the Urban Environment from the City College of New York. He has been an intern at Urban Green Council in New York City, a superintendent at Coastal Enterprises on Long Island and a benefits coordinator at PSC-CUNY Welfare Fund. In addition to a role as a Product Consultant at 475, Jeremy is also an Adjunct Lecturer at CCNY where he teaches architecture and sustainability students Passive House principles.

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Laura Martin

Accounting Associate

Laura started in the accounting industry almost two decades ago working for an accounting firm in Westchester, NY focused in the construction and architecture field. She holds a Masters Degree in Accounting obtained from Wilmington University, College of Business and a Bachelor Degree in Economics with a Concentration in Forensic Financial Analysis, obtained from the City University of New York. Having been a proud resident of NYC since 1990, for her it is important to give back to her adopted home. Laura does volunteer work for New York Care and fundraising for Bike MS New York. In her free time Laura loves to travel and care for her dog, Jack.

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Aaron McCormack

Director, Technical Development

Aaron joined 475 in 2017 after working for our European partners, Ecological Building Systems in Ireland where he served as a Technical Sales Engineer for 4 years. He holds a Bachelor of Science Degree in Architectural Design and Technology from Cardiff Metropolitan University. Aaron is a Certified Passive House Consultant. He stays connected to his homeland competing in regular hurling matches in Gaelic Park, in the Bronx.

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Brad Moore

Product Consultant, New England (VT, NH, ME, MA, RI)

Brad got his start in construction during high school through vocational carpentry training before attending the University of New Hampshire where he graduated with a degree in construction management. Prior to joining 475 his career has ranged from carpentry to site supervision in the field and quickly progressed to a career in project management in the single family, multifamily and commercial sectors. Working for many years as a project manager for one of North America’s leading timber frame and panelized prefabricated construction companies brought out Brad’s passion for sustainable and responsible construction methods. He has a deep appreciation for well thought out and repeatable detailing for both prefab and site built projects, yet enjoys troubleshooting unique project specific challenges. Outside of work he enjoys time with his family, golfing, and woodworking.

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Corey Murphy

Product Consultant, NY State

Corey graduated from City College of New York with a Masters of Science degree in Sustainability in the Urban Environment in 2018. He is currently an Adjunct Professor in RIT’s Graduate Sustainable Architecture Program, teaching Understanding Sustainability, and having previously taught Sustainable Building Metrics. Corey spent much of his life between NYC and the Adirondacks, witnessing both extreme weather events and long-term ecological degradation related to fossil fuel use, he is passionate about promoting sustainability by design to achieve resilience in the natural and built environments. He spends his spare time as a Permaculture designer, focusing on Agro-Ecological engineering at his homestead, and enjoying the outdoors at every opportunity.

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Ian Nimmo

Product Consultant, West (AZ, CA, ID, NV, OR, WA)

Ian graduated from the University of Puget Sound with a degree in International Politics in 2008. Ian's always had a focus on sustainability and energy conservation working for Greenpeace as a canvasser on busy Seattle streets, as a Project Manager for a commercial LED lighting rebate program, and most recently working on regional energy efficiency and indoor air quality studies in the Northwest. Ian is a certified Building Analyst through the Building Performance Institute, is a certified HERS Rater, is a certified Passive House Tradesperson and has over 5 years of commercial and residential energy auditing experience. Ian loves connecting with the natural world via hiking, backpacking, mountain biking, skiing, surfing, stargazing, and swimming in chilly alpine lakes.

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Gabrielle O'Grady

Technical Sales (CT, NYC, Long Island)

Gabrielle grew up around construction as her parents and immigrant extended family built her family’s first home in Wisconsin. At a young age she liked to doodle blueprint sketches and help her dad with home improvement projects such as adding on a wraparound deck. Gabrielle also enjoyed visiting her opa’s (Yugoslavian for grandpa) cabinetry shop. Gabrielle was pre-med at the University of Connecticut and worked in hospitals and physician’s offices for 3+ years. She moved to Colorado for 2.5 years where her love for the outdoors and sustainable living continued to grow. Gabrielle then went back to school to get her M.S. in Sustainability in the Urban Environment at the City College of New York to study building science, green building design and materials, and how they relate to human health. She worked for 3 years in energy efficiency of commercial HVAC systems before joining the team at 475 High Performance Building Supply. She is a LEED Green Associate and is Revit certified. Gabrielle still enjoys home improvement projects, as well as green-building podcasts, snowboarding, sailing, surfing, and time with family.

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Chris Quincey

Product Consultant – NJ, Midwest, Rockies, AK, HI

Chris has a bachelor's degree in Entrepreneurship and Small Business Management from Quinnipiac University. While there he discovered his passion for the sustainability market through international business experience. This led him to attain a graduate degree in Bioeconomy from the University of Hohenheim in Germany, where he furthered his involvement in business by working with the Entrepreneurship department. Having worked in adjacent markets, such as landscaping, painting, residential solar, and below-grade waterproofing, moving on to join the 475 team to create a more sustainable construction market was a no brainer. Outside of work hours, you can find him traveling, gardening, hiking, or fishing.

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Nick Shaw

Senior Product Consultant – South, SE, & MidAtlantic

Nick got PHIUS Consultant and Builder certifications in 2015 while working at Yestermorrow Design Build School. He worked as a builder and consultant for a variety of high performance certified projects. Regardless of certification goals Nick has been focused on addressing operational and embodied carbon concerns through building envelope design and install. With a BS in Environmental Education and 10+ years of industry experience Nick is trying his darndest to help designers and builders make their projects more energy efficient and sustainable. In his free time he rock climbs, fly fishes, hikes, and defends himself from his cats while renovating his home in Asheville, NC.

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Ashley Verhines

Logistics Manager

Ashley graduated from the UCLA Institute of the Environment & Sustainability and holds certificates in Supply Chain Management from the Massachusetts Institute of Technology. Prior to working at 475, she managed public-private partnerships for a green building nonprofit in NYC. Long before that, she guided backpacking trips in the Sierra Nevadas and still enjoys getting out into the backcountry when she can. She also loves eating dumplings in NYC's nine Chinatowns, and getting her hands dirty with home DIY projects.

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Aaron Waldt

Product Consultant for Eastern Canada
(ON, QC, Maritime Provinces)

Aaron studied Biomedical Engineering at the University of Guelph, and recently completed his Master of Management of Innovation at the University of Toronto. Since finishing school, Aaron realized his passion for building innovation and has immersed himself in the construction industry, completing building science courses at the British Columbia Institute of Technology and becoming a Certified Passive House Consultant. Outside of work, Aaron can be found either on a golf course or cycling.

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