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Development Services

From Concept to Construction

Phone: 503-823-7300

TTY : 503-823-6868

1900 SW 4th Ave, Portland, OR 97201

Accessory Dwelling Units (ADUs)

You will find information on this page about adding an accessory dwelling unit to a property. Every dwelling unit functions as a separate unit. They are commonly known as "mother-in-law apartments", "granny-flats" or studio apartments.


Plan Review Process

Plan reviewers from the Bureau of Development Services representing fire life safety and structural disciplines, as well as staff from the Parks Bureau, Office of Transportation, Bureau of Environmental Services, and Water Bureau, will all participate in the review of your plans.

The bureaus/review groups that will check a typical conversion project include:
  • Planning and Zoning
  • Life Safety Review
  • Structural Review
  • Addressing
  • Site Development Review
  • Residential Subsurface Site Evaluation - Site Development
  • Bureau of Environmental ServicesReview
  • Portland Department of Transportation Review
  • Bureau of Water Works Review
  • Urban Forestry Review
See the Permit Processing Flowchart
 

Checksheets
A checksheet is sent to the applicant when a reviewer needs additional information or a correction has to be made to the plans. When you have gathered the additional information or made the corrections, bring the plans/information to the Development Services Center. Reviewers will be notified that a checksheet response has been received and the review will continue. More information on checksheets.

Status Reports
Status reports are available after your project has been assigned to reviewers. Status reports show all reviews and include the reviewer’s name and phone number. To obtain a status report, call (503) 823-7000 and select option four to have a status report faxed to you or call (503) 823-7357 to have one mailed to you.

Permit Issued
When the last technical review is approved, your permit will pre-issued. You will be contacted when your permit is ready, and of your final fee total. Fees may be paid by cash, check, Visa or Mastercard.

If your permit is ready for issuance, you may pick up your permit between 8:00 am - 3:00 pm, Tuesday-Friday at Permitting Services, located on the 2nd floor of1900 SW 4th Avenue,Portland,OR. For more information call (503) 823-7357.