Jefferson County reviews impact-fee balances and plans update to capital-improvement study

Jefferson County planning and finance staff updated commissioners on the county’s impact-fee accounts and the legal constraints on how those fees may be used.

Staff reminded the board that Idaho law and the county’s capital improvement plan define which projects and costs can be supported by impact fees. Speakers said certain improvement types (for example, new equipment intended to maintain a level of service) may be eligible for a higher proportion of impact fees, while roadway and bridge projects in the capital improvement plan may only be reimbursed with a capped portion of fee proceeds — the meeting included a working example: a $500,000 roadway/lighting improvement with a 12% impact-fee allocation would allow $60,000 of impact-fee funding toward that improvement.

Participants discussed statutory requirements described in the meeting: capital improvement plans must describe existing facilities and deficiencies, projected demand over a 20-year horizon, funding sources, and must be prepared or reviewed by a qualified professional; the county also must review its capital improvement plan at least once every five years. Staff said equipment eligible for use of impact fees generally must have a useful life of at least 10 years to qualify.

Why it matters: As subdivisions and new service units come online, impact fees are one revenue source to pay for growth-driven capital needs, but they must be used only for projects identified in the capital improvement plan and subject to statutory limits and timing rules.

Ending: Staff said they will work with GIS staff to refine demand and network data and will engage a consultant to update the impact-fee study and the county’s capital improvement plan as required by statute.