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The City of Portland, Oregon

Development Services

From Concept to Construction

Phone: 503-823-7300


1900 SW 4th Ave, Portland, OR 97201

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New deconstruction requirements effective October 31, 2016

In one of the hottest housing markets in the United States in a city filled with early 20th-Century homes, the City of Portland is turning to deconstruction instead of demolition to reduce waste, save valuable building materials for reuse and protect public health. Earlier this summer, Portland City Council adopted an ordinance including code language, which requires projects seeking a demolition permit of a house or duplex to fully deconstruct that structure if it was built in 1916 or earlier or is a designated historic resource. With Council’s unanimous approval of that ordinance, Portland became the first city in the country to ensure that valuable materials from our demolished houses and duplexes are salvaged for reuse instead of crushed and landfilled. The new deconstruction requirements go into effect October 31, 2016.

4515 NE Fremont“Our existing older houses are assets: They preserve our built history and contribute to neighborhood character,” said Portland Mayor Charlie Hales. “If they must come down, materials from these houses can live on in new buildings. By keeping valuable materials out of the landfill, we ensure the least amount of impact on the environment and neighbors. Deconstruction reduces our carbon footprint; prevents harmful air pollution caused by demolition; and creates good, family wage jobs."

In Portland, more than 300 single-family homes are demolished each year. This produces thousands of tons of waste — a significant amount of which could be salvaged for reuse. From start to finish, deconstruction protects health, creates pathways to construction careers and generates affordable reusable building materials. Currently, less than 10 percent of houses that are removed use deconstruction.

About 18 months ago, Portland City Council asked BPS to develop strategies to increase deconstruction activity as an alternative to mechanical demolition. With the help of an industry- and community-based advisory group, BPS has: 

  • Established a deconstruction grant program, which now awards up to $3,000 per project to assist with residential deconstruction in Portland.
  • Been awarded $50,000 in funding from the Oregon Department of Environmental Quality to supplement the grant program.
  • Developed recommendations and policy targets that are included in the new rule.  
  • Conducted contractor training and certification for deconstruction contractors.
  • Developed a work-force training to be held in fall or early winter.

Approximately 33 percent of single-family demolitions will be subject to the deconstruction requirement. Increased deconstruction will:

  • Divert 8 million pounds (4,000 tons) of materials for reuse (annually).
  • Create training and job opportunities that educate the next generation of deconstruction experts.
  • Increase the likelihood of discovering materials containing lead and asbestos for safe removal and disposal.

Visit the City of Portland’s website, for more details about deconstruction.