Transportation Development Tax
The Transportation Development Tax (TDT) is imposed on new development and redevelopment within Washington County. The tax is charged to developers to help pay for the impact new development has on the transportation system.
- TDT Rate Schedule
- North Bethany TSDC
- Bonny Slope West TSDC
- TDT project list (amended 12/01/20)
- Procedures manual
The TDT is collected before building permits are issued. In cases where building permits are not required, it is collected before final approval of a development application. However, there are options for payment including:
- Payment over time
- Deferral of payment until occupancy, in certain cases
Additionally, credit toward TDT may be approved for construction of eligible road or sidewalk improvements.
TDT Checklist - Applicant Only