Pico Rivera, CA Accessory Structures: ADU Impact Fees (2026)

Section 18.22.030(A)(8) of the Pico Rivera Municipal Code states plainly that no impact fee is required for an accessory dwelling unit that is less than 750 square feet in size, and that impact fees will apply as adopted by resolution or ordinance once a unit reaches that size. The exemption sits inside the same Section 18.22.030 framework that caps a detached or attached ADU at 1,000 square feet and a junior accessory dwelling unit at 500 square feet, so a JADU is always exempt from impact fees by virtue of its size, and a full-size detached or attached ADU is exempt only if it is built under 750 square feet, roughly three-quarters of the maximum size the code otherwise allows.

Once an ADU reaches or exceeds 750 square feet, it becomes subject to whatever development impact fees the City Council has separately adopted by resolution or ordinance, which cover items outside this Section such as park, traffic or public facilities fees charged citywide on new residential square footage; because the code does not print a specific fee schedule inside Section 18.22.030 itself, applicants confirm the current fee amount with the Community and Economic Development Department when they submit a building permit application. The exemption tracks the State ADU law referenced earlier in Section 18.22.030, which similarly directs that ADUs comply with the Title and State law, so Pico Rivera's local rule does not narrow the size threshold below which fees are waived.