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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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Transportation System Development Charge Update

City ScenePBOT has completed an update of its Transportation System Development Charge (TSDC) methodology and capital project list. A TSDC is a one-time fee assessed new development to help fund the cost of capital improvements to serve a growing population. City Council adopted the TSDC 2017 Rate Study on September 27, 2017. It will go into effect January 1, 2018. To review the updated methodology and capital project list contained in the 2017 Transportation System Development Charge Rate Study which may be found here. An appendix section summarizing comments received during the comment period was also added.

Innovation Quadrant and North Macadam Quadrant TSDC Overlays

The City of Portland updated the citywide TSDC program in 2017 by revising the program’s project list, underlying data and how rates are assessed. This addendum to the Innovation and North Macadam Quadrants Transportation System Development Charge (TSDC) Overlay Rate Study matches the new citywide TSDC program methodology. Specific features include:

  • Overlay TSDC project list – The Innovation and North Macadam Quadrants project list has been modified to include updated project costs for the improvement projects on the list. Completed projects have also been retained to allow reimbursement fees to be collected. TSDC eligibility has also been modified to be consistent with the citywide TSDC methodology.
  • Person trip data – This update is the first time that the program is derived from actual person trip data. Moving from vehicular trip data to actual person trip data provides a much more complete picture of how Portland’s transportation system is used. The new program also shifts to measure PM peak hour travel rather than daily travel to assess impacts when the system is most in demand.
  • Streamlined methodology – the previous program featured a very complex process for measuring project eligibility and resulted in a high proportion of projects being ineligible for TSDCs. This new methodology simplifies the way that TSDC fees are calculated, using the value of Portland’s existing transportation system as an upper limit for setting TSDC fees, which are then right-sized to the TSDC project list. This new methodology results in a higher proportion of growth-accommodating projects being eligible for TSDC funding.

The Transportation System Development Charge (TSDC) Overlay Project Addendums public hearing is scheduled for January 3, 2018 at Portland City Hall.

Provide written testimony to the Portland City Council:

Written material for distribution to Council members may also be submitted by those unable to attend in person. Email written testimony to or mail written testimony to the Council Clerk at 1221 SW 4th Avenue, Room 130, Portland, OR 97204. Written testimony should be received the day before the time of the hearing and must include your name and address.