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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Erika Mayer

General Manager, Canada

Erika graduated with a Bachelor's degree in Architecture from Carleton University in Ottawa, ON. For over 15 years she has worked as a building industry liaison with a focus on sustainable buildings. Erika was one of the first employees of the Canada Green Building Council and helped bring LEED to Canada. She is a LEED AP BD+C, certified Project Manager (PMP), and a natural solution provider who will be able connect those designing, building, and constructing high-performance buildings with the best solutions to meet their project goals. Erika competed in short track speed skating and used to be a hockey goalie.

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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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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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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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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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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 will hold a Master of Science, Sustainability in the Urban Environment from the City College of New York. He has been an intern at Urban Green in New York City, a superintendent at Coastal Enterprises on Long Island and a benefits coordinator at PSC-CUNY Welfare Fund. On his 18th birthday, Jeremy jumped out of a plane with his mother.

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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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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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