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

080 at the rate in effect on the date of permit issuance. 110(b) carves out a specific exemption: residential development projects, including accessory dwelling units, are exempt from impact fees for any remodel or addition, as long as the work does not result in a change of use. That means a homeowner adding a detached or attached ADU through a remodel or addition to an existing residence pays no traffic, capital facility, fire, or park impact fee under this chapter, so long as the property continues to be used for the same residential purpose.

The exemption sits next to a separate rule in subsection (a) exempting nonresidential projects only from park land dedication and park facility fees, and a credit mechanism in subsection (c) for reconstructing a razed structure if the applicant documents the prior structure existed as of specific cutoff dates (May 16, 1989 for fire fee credit; June 11, 1991 for traffic, capital facility, or park facility fee credit; April 18, 1972 for park dedication in-lieu fee credit). 070(c), which becomes a lien against the property enforceable against successors in interest until paid.