Portland is the first city in the country to ban the demolition of its oldest homes.
The city will require that homes built in 1916 or before are deconstructed, so the materials inside can be salvaged.
The city council passed a resolution in favor of the demolition ban this winter. They’re set to review changes to the city code next Wednesday, with a vote likely following in early July.
About 20 percent of the waste in landfills comes from building construction and demolition, according to the mayor's office.