Lloyd Alter

Design Editor

Lloyd Alter


Architecture & Design, Sustainable Design, Interior Design


University of Toronto


Lloyd Alter has been an architect, real estate developer, and prefab entrepreneur. He now teaches Sustainable Design at Ryerson School of Interior Design.



Alter has been writing for TreeHugger since 2005 about architecture, design, transportation and planning. He is design editor and was previously managing editor. He has written for MNN since 2015. He has contributed to The Guardian, Corporate Knights Magazine, Azure Magazine, Architectural Record, and Greensource.

He has been a regular speaker or moderator at Passive House conferences in Seattle, Vancouver, New York City, Boston, Vienna, and Munich. He Has also spoken about green building in Vancouver, Toronto, and Moose Jaw, Saskatchewan.

Prior to writing, Alter was a promoter of tiny homes and prefabricated housing, lecturing on prefab at conferences in Los Angeles, San Francisco, and Austin, Texas. He has worked as a real estate developer, building condominiums in Toronto, Canada, and as an architect.

Alter was Chairman of the Toronto Society of Architects, Vice President of the Ontario Association of Architects, and President of the Architectural Conservancy of Ontario.


  • 2014 USGBC Leadership Award for promotion of green building
  • 2015 Mary Millard Award for contribution to architectural preservation
  • Ontario Renews Award and two Toronto Historical Board commendations for architecture and development work



Alter has a Bachelor of Architecture, Alpha Rho Chi medal, from the University of Toronto. He was admitted to the Ontario Association of Architects in 1979.


Treehugger and Dotdash

Our mission at Treehugger is to provide advice, clarity, and inspiration for both the eco-savvy and the green living novice. We hope our content gives you the confidence to purchase a better dishwasher, build a green beauty routine, or simply learn more about the world around you.

Treehugger is part of the Dotdash family.

For more than 20 years, Dotdash brands have been helping people find answers, solve problems, and get inspired. We are one of the top-20 largest content publishers on the Internet according to comScore, and reach more than 30% of the U.S. population monthly. Our brands collectively have won more than 20 industry awards in the last year alone, and recently Dotdash was named Publisher of the Year by Digiday, a leading industry publication.

Read more from Lloyd Alter