All residential zoning districts in Laguna Niguel have a maximum structure height of 35 feet under LNMC Table 3.2 and Sec. 9-1-33.4, measured as an imaginary plane 35 feet above ground level that the building may not penetrate.
Under LNMC 9-1-33.1 Table 3.2, the maximum structure height is 35 feet across all residential districts, from RS-1 rural residential through RM multifamily. Sec. 9-1-33.4 defines this as the vertical distance from ground to an imaginary plane 35 feet above and parallel to the ground, which the building must not penetrate. Ground level is the lower of the finish grades at exterior walls or the existing grades on the site. Accessory structures have separate limits under Sec. 9-1-35.3: unenclosed accessory structures may reach 15 feet if they meet main-building setbacks (12 feet if they encroach), while enclosed accessory structures may not exceed 10 feet in height or 150 square feet in floor area.
Buildings exceeding 35 feet or penetrating the height plane are zoning violations; exceeding limits requires a variance. Accessory-structure adjustments are processed under Sec. 9-1-114.
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