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The City of Portland, Oregon

Planning and Sustainability

Innovation. Collaboration. Practical Solutions.

Phone: 503-823-7700

Curbside Hotline: 503-823-7202

1900 SW 4th Ave, Suite 7100, Portland, OR 97201

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What is the Residential Infill Project doing to encourage the preservation of existing houses?

Staff is proposing incentives to encourage retention and conversions of existing houses and historic resources. These proposals include:  

  • Increased floor area limits for additions and remodels compared to new construction
  • More flexibility in the configuration of housing units and allocation of allowed floor area when an existing historic resource is adapted.
  • New flag lot provisions for narrow lots that require a house to be retained while creating a separate lot for a new backyard house.
  • Conversions of basements to Accessory Dwelling Units in existing houses will not be subject to the unit size cap.