Timothy is the President and CEO of Onion Flats LLC, and a licensed architect in Pennsylvania and New Jersey. In 1997, with his brother Patrick, he co-founded Onion Flats LLC. Tim has been an adjunct Professor of Architecture at Philadelphia University, Temple University, University of Calgary, and University of Pennsylvania. His service and experience extends into his community by holding current positions in the Northern Liberties Neighbors Association Zoning Committee, the Philadelphia Sustainability Advisory Board, as well as a previous position on the Old City Civic Association Board of Directors. Tim is also Founder/President of FAARM, a non-profit organization dedicated solely to the exhibition of art and architecture in Philadelphia.

As a partner in Onion Flats, Tim’s role is Lead Architect and Construction Manager. In 2005, Tim and his brothers Pat and John, in conjunction with Howard Steinberg formed the architecture firm Plumbob, LLC and JIG, Inc., a General Contracting, Construction Management and Green Roof company, allowing this team to provide full design-build services for both clients and their own developments. Additionally, Tim is a Certified LEED Accredited Professional and Passive House Certified Consultant and Tradesman.