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

Section 17.15.040 of the Beaumont Municipal Code governs how ADUs and JADUs are permitted and charged in Beaumont, Riverside County. Subsection A requires plot plan approval by the Community Development Director plus a building permit, and subsection B requires the City to act within 60 days of a complete application. The fee rules sit in subsection C, titled Impact and Utility Fees, and they apply before the building permit is issued: the applicant must pay all applicable fees first.

The first tier is a full exemption. Under C.1, no impact fees are imposed on a JADU or on an ADU less than 750 square feet in size. The second tier is a proportional charge. Under C.2, an ADU of 750 square feet or more is charged in relation to the square footage of the primary unit, using the code's own formula: the floor area of the ADU, divided by the floor area of the primary dwelling, times the typical fee amount charged for a new dwelling. A 900 square foot ADU behind a 2,700 square foot house, for example, carries one third of the new-dwelling fee under that formula.

Subsection C.3 defines the term. An impact fee means a fee as defined in Government Code Section 66000(b) and a fee specified in Government Code Section 66477, and it does not include any connection fee or capacity charge for water or sewer service. That carve-out matters because utility charges are handled separately. Under C.4, an ADU or JADU built with a new single-family home needs its own utility connection directly to the utility and pays the normal connection fee and capacity charge for a new dwelling. Under C.5, an ADU or JADU contained within an existing structure does not have to install a separate direct connection. An ADU that is not within an existing structure must install a new or separate utility connection and be charged a connection fee and, or, capacity charge, proportionate to the burden the ADU puts on the water or sewer system based on its size or number of plumbing fixtures, as determined by the City. Chapter 17.15 prints no dollar amounts, so the fee schedule adopted elsewhere by the City sets the figures.