Ada County Highway District

Impact Fees and Capital Improvements Plan

The ACHD Commission approved changes to the Impact Fee Ordinance and related Capital Improvements Plan on July 27, 2022. The ordinance covers fees charged to development to help compensate for the new roadway infrastructure needed to promote and accommodate orderly growth and development in Ada County. The ordinance, No. 246A, took effect on October 1, 2022.


For development applications submitted prior to October 1, 2022, use Ordinance 246 to calculate Impact Fees.

Ordinance No. 246A and Capital Improvements Plan

Related documents:


For additional information:


ACHD Main Line: 208-387-6100
Development Services:  208-387-6170
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