On February 12, 2026, the Idaho Supreme Court issued its first authoritative decision construing the Community Infrastructure District Act (CID Act), Idaho Code §§ 50-3101 to 50-3121, in Doyle v. Harris Ranch Community Infrastructure District No. 1. The opinion resolves several issues of first impression — what qualifies as reimbursable “community infrastructure,” how strictly the 60-day statute of limitations bars challenges to a CID’s formation and bond authority, and whether a CID is legally distinct from its creating municipality. For developers forming or using a CID, the decision provides welcome certainty on the durability of CID bonds, reimbursement structures, and the scope of qualifying community infrastructure.

Background
The CID Act allows a developer to petition Idaho cities and counties to form special-purpose taxing districts that finance community infrastructure ahead of development and allow growth to “pay for itself.” I.C. § 50-3101(1)(a)–(c). “Community infrastructure” is broadly defined to include roads, sidewalks, parks, sewers, stormwater facilities, and other public facilities that have a “substantial nexus” to, and directly or indirectly benefit, the district. I.C. § 50-3102(2). A CID is formed upon petition by two-thirds of residents or all landowners within a proposed district to the governing city or county. Once formed, CIDs are political subdivisions with only the power the Act expressly grants, including the powers to contract, finance infrastructure, levy property taxes, and incur debt through general obligation bonds. I.C. § 50-3105(1). Qualified electors within the district must approve a ceiling bond amount by a two-thirds vote; once approved, the district board may issue additional bond series without a further elector vote, notice, or hearing. I.C. § 50-3108(1)–(3).

Reprinted courtesy of Sara M. Ajeti, Snell & Wilmer and Tara Martens Miller, Snell & Wilmer

Ms. Ajeti may be contacted at sajeti@swlaw.com
Ms. Miller may be contacted at tmmiller@swlaw.com