In October 2016, in an effort to reduce waste, support material reuse, and reduce environmental impacts of demolition, the City of Portland, Oregon, enacted an ordinance requiring manual deconstruction of residential homes built in 1916 or earlier. This study analyzes the material quantity data from the first 36 deconstruction projects in Portland to measure carbon and energy impacts. The carbon and energy impacts were also calculated for a hypothetical scenario in which the same houses were mechanically demolished.
The goal of this project is to calculate the carbon and energy impacts of deconstruction and demolition of
single-family houses in Portland, Oregon. The results will allow the City of Portland to measure the effectiveness of their deconstruction policy in achieving climate and energy goals.