Transportation System Development Charges (TSDC)

TSDCs are one-time fees assessed on new or expanded developments in unincorporated Clackamas County.

These fees are based on the number of vehicle trips a specific  land use generates and are intended to help fund transportation facilities needed to support the new or expanded development and its users.

TSDCs in unincorporated Clackamas County

• Fees
• Installment Plan
• Methodology
• Ordinance
• Reductions for Station Area and Mixed-Use Developments
• Residential permits
• Statement of use
• TSDC Credit Eligibility Flowchart
• TSDC Overview

Overview

A TSDC may be included in the final calculation of building permit fees for residential and commercial projects, if applicable. 

• New single-family residence, accessory dwelling unit (ADUs)  and manufactured homes are assessed a TSDC.
• Replacement dwellings are not assessed a TSDC;  a replacement dwelling agreement may be required to confirm prior residence.
• Residential accessory structures (e.g., garages, shops) are not assessed a TSDC.
• A guest home, as defined by ordinance, are not  assessed a TSDC.

For more information or questions, please submit your request using the DTD-Transportation SDC by email at dtdtranssdc@clackamas.us or in person at Clackamas County’s Transportation Engineering Department on the third floor of the Development Services Building, 150 Beavercreek Road, Oregon City, OR 97045.

Residential permits

TSDCs for new or expanded residential dwellings are as follows:

Commercial Permits/Statement of Use form

All commercial permits (including new uses, change of occupancy and tenant improvements) must include a completed Statement of Use form. The Engineering Division will review before the permit is issued so that any applicable TSDC rates can be determined. TSDC rates vary depending on the by structure; this form helps clarify the proposed development and prior use of the space.

You may submit your completed Statement of Use form to the Engineering Division:

• by email at dtdtranssdc@clackamas.us
• in person or by mail to the third floor permits lobby in the Development Services Building, 150 Beavercreek Road, Oregon City, OR 97045.

Parks System Development Charges (PSDC)

Parks System Development Charges are one-time fees charged to new development or significant redevelopment to help pay a portion of the increased cost to meet parks and recreation needs created by such growth. PSDC fees are set by the North Clackamas Parks & Recreation District (NCPRD) based on the specific impact a development inside NCPRD boundaries is expected to have on the District's population and employment.

• Definitions of these SIC Industry Classifications
• Park System Development Charge Informational Handout

Other Fees

• Building Codes Fees
• County Code, Appendix A – Fees
• Engineering Fees
• Planning & Zoning Fees