Woodland, CA Accessory Structures: ADU Impact Fees (2026)

Woodland Municipal Code § 17.84.030.H.1 sets the impact-fee framework for ADUs and JADUs citywide. Subsection H.1.a defines an 'impact fee' as a fee under the Mitigation Fee Act, California Government Code § 66000(b), and a fee under the Quimby Act, California Government Code § 66477, specifically excluding any water or sewer connection fee or capacity charge from that definition. Subsection H.1.b establishes the core exemption: no impact fee is required for an ADU or JADU that is 750 square feet or less of interior livable space, covering the large majority of ADUs built in Woodland given the 1,000-square-foot cap on Class 2 units.

For an ADU larger than 750 square feet, subsection H.1.c requires that any applicable impact fee be charged proportionately in relation to the square footage of the primary dwelling unit, using a formula that divides the primary dwelling's floor area by the ADU's floor area and multiplies by the typical fee charged for a new dwelling, so a large ADU on a small home pays proportionally less than a full new-unit fee. Subsection H.1.d separately exempts any JADU or ADU under 500 square feet of interior livable space from school impact fees under Education Code § 17620(a)(1)(C), because such small units do not increase assessable space under that statute.

These fee rules apply to all Class 1 (state-mandated) and Class 2 (locally regulated) ADUs and JADUs alike under the chapeau of subsection H, and fees are collected through Community Development at the time of building permit issuance.