Idaho Development Impact Fees by City (2026)
Development impact, water/sewer connection, and mitigation fees across 6 Idaho jurisdictions — normalized per dwelling unit so you can compare them directly.
6
Jurisdictions
$19,123
Median per home
impact + connection
$32,492
Highest
Star
$13,760
Lowest tracked
Nampa
Idaho jurisdictions ranked by fee burden
Total fees per single-family detached home, highest first.
How development impact fees work in Idaho
Idaho impact fees fall under the Idaho Development Impact Fee Act. School impact fees are not permitted in Idaho, so growth-related school costs are funded through bonds rather than builder fees.
Transportation impact fees are often levied by a separate highway district (for example, the Ada County Highway District in the Boise metro) and collected at the city building permit, so a builder pays both city and district charges.
Idaho impact fees — FAQ
- Which Idaho city has the highest development impact fees?
- Star currently has the highest total at about $32,492 per single-family home among the Idaho jurisdictions in ImpactFeeAtlas.
- What's the typical impact fee for a home in Idaho?
- The median total across tracked Idaho jurisdictions is about $19,123 per single-family home (impact + water/sewer connection fees).