Coeur d'Alene, ID Accessory Structures: ADU Impact Fees (2026)

Section 13.16.010 assesses a sewer capitalization fee, in addition to any hookup fee, on owners of property connecting to the Coeur d'Alene public sewer system. The schedule lists an accessory dwelling unit at 2.20 per unit and a calculated fee of $6,460. A single family dwelling is 2.27 per unit at $6,665, and a multiple family dwelling of more than two units is 2.20 per unit at $6,460. The fee rests on population equivalents, and the population equivalent charge behind the residential rates is $2,936.00 for FY 2023-2024 through FY 2027-2028. Section 13.16.030 sets that charge on a five year study period using the system buy-in method.

Payment timing is fixed by section 13.16.050: the fee goes to the City Treasurer or designee with the building permit application, or with the plumbing permit application when no building permit is required, and the permit does not issue until the fee is paid. Nonpayment lets the city discontinue sewer service, and the charge becomes a lien on the property (13.16.060). Revenue goes to the sewer system capital improvement fund, restricted to expansion of the public sewer system, storm sewer separation and sewage treatment facilities (13.16.070).

The development impact fee is a different charge. Title 14 defines a Development Impact Fee to exclude connection or hook up charges, collects it at issuance of a building permit, and bars the permit until it is paid (14.03.010). The city calculates it within thirty days of complete permit plans for residential development under section 14.05.010, using the adopted Development Impact Fee Report that section 14.04.010 incorporates by reference, and the code text does not print an ADU dollar figure. Section 17.08.1040A.2 ties the two together for rentals: after the effective date of the short-term rental article, an ADU can be used as a short-term rental only if the required impact fee is paid for it, and a majority owner or immediate family member must then occupy the principal dwelling or ADU more than six months of any year.