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Wrong Timothy McDonald?

Mr. Timothy E. G. McDonald

President and Chief Executive Officer

Onion Flats

Direct Phone: (215) ***-****       

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Onion Flats

111 W. Norris St

Philadelphia, Pennsylvania 19122

United States

Company Description

Onion Flats has been practicing in Philadelphia as developers, architects and builders since 1997. Our work has been published widely and has won national and international awards, focusing on innovated solutions for highly sustainable urban communities, ... more

Find other employees at this company (18)

Background Information

Employment History

Adjunct Professor of Architecture

Temple University

Adjunct Professor of Architecture

University of Pennsylvania

Adjunct Professor of Architecture

Philadelphia University

Bulk Distribution Driver Trainer

Linde AG


City of Wilton


Advanced EMS


Board Member
Northern Liberties Neighbors Association

Founder and President Inc

Board Member
City Civic Association

Plumbob , LLC

JIG , Inc.


Bachelors of Architecture degree

Penn State University

Masters Degree

master's degree


Web References (197 Total References)

Herring was joined in the presentation ... [cached]

Herring was joined in the presentation by Tim McDonald, a partner at OnionFlats in Philadelphia, and Ken Levenson, a Brooklyn, New York-based architect and partner at 475 High Performance Building Supply, an e-commerce supplier of energy-efficiency products.

"By 2030, 900 billion square feet of new and refurbished buildings will be constructed in cities worldwide," according to McDonald.
Belfield Townhomes in Philadelphia were designed to Passive House standards by OnionFlats.
Belfield Townhomes in Philadelphia were designed to Passive House standards by OnionFlats.
Building solutions to meet both carbon reduction goals and the demand for housing will have to be "radical, affordable, and scalable," according to McDonald, who believes that passive structures can accomplish both objectives. His firm is currently pursuing multiple residential projects in the market-rate and affordable/workforce categories, all of which meet the certification criteria for Passive House-the U.S. version of Passivhaus. One project, Belfield Townhomes, is a set of three and four-bedroom affordable-rate townhomes built for three formerly homeless families in a blighted section of Philadelphia. The buildings were built off site in a modular fashion with solar panels and their own energy recovery system.
"It elevates the standard for affordable housing in this country" and could be a scalable prototype, McDonald said.
The Pennsylvania Housing Finance Agency (PHFA) recently added Passive House certification as an incentive to developers when submitting applications to receive low-income housing tax credits. This year, 30 percent of PHFA-financed projects are expected to be built to passive standards, McDonald said.

Onion Flats [cached]

Timothy McDonald

Timothy McDonald is the President and CEO of Onion Flats LLC. more

Onion Flats [cached]

Timothy McDonald

Timothy McDonald is the President and CEO of Onion Flats LLC. Tim is a licensed architect in Pennsylvania and New Jersey. In 1997, with his brother Patrick, he co-founded Onion Flats LLC; a Philadelphia based real estate development/design/build firm. 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 for many of Onion Flats' projects. 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.

We were proud to support two ... [cached]

We were proud to support two recipients of 2014 Passive House Awards from North America: Tim McDonald of Onion Flats/Plumbob Design, won for his Belfield, PA, project and Julie Torres Muskovitz whose "Tighthouse," NY, won the Retrofits category.

Milhaus - vertical mixed-use and urban infill residential environments [cached]

Tim McDonald, Principal at Onion Flats, says, "We think this way because most developers won't.

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