ACHD reviews all development applications, street improvement and construction plans, as well as final plats to ensure conformance to District standards and policy.

To develop in Ada County, you'll need to be familiar with the guidelines and expectations ACHD has laid out for development that impacts the roadway. Use this page to explore those expectations.

Steps for developing in Ada County

Reach out to the ACHD team at 208-387-6170 to get started.

1. Schedule and attend a pre-application meeting. This is optional but can be helpful in navigating the process.
2. Complete a traffic impact study (if applicable).  View the Policy.
3. Submit development applications to the appropriate jurisdiction (city or county). That agency will then send the application to ACHD for additional review.
4. Submit civil plans to ACHD.
5. Submit traffic control plans to ACHD.

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