Placer County, CA Building Setbacks & Zoning: Structure Height Limits (2026)

Section 17.54.020 sets the baseline: no building or structure may be built or altered to exceed the height limit set by the applicable zone district (Articles 17.06 through 17.52) unless an exception in the section applies. Height is measured as the vertical distance from the highest point of the structure to the average of the highest and lowest points where the exterior walls touch the grade, or from an approved house or building pad grade.

Exception 1 lets public and quasi-public buildings, schools, houses of worship, and hospitals rise to 50 feet in zones with a limit under 50 feet, provided every required setback is increased one foot for each foot the building exceeds the normal zone height limit. Exception 2 allows hotels and similar institutions in zones with limits up to 50 feet to exceed that limit through a conditional use permit supported by a visual-impact analysis with photo simulations.

Exception 3 is a sloping-lot allowance for dwellings: where the average natural slope of the building envelope is 15% or more, the maximum height increases on a sliding scale, from 5.0 feet of added height at 15% slope up to a full 15 feet at 30% slope or more, with proportional increases in between the listed breakpoints (16% slope allows 5.7 feet extra; 22.5% allows 10.0 feet extra, etc.).

Exception 4 covers specific structure types: chimneys, vents, and other architectural or mechanical appurtenances may run up to 15% higher than the zone's height limit; towers, poles, and water tanks may exceed the limit with a minor use permit; and individual radio/TV antennae and utility transmission poles are exempt outright, though cellular/PCS facilities and satellite dishes are instead governed by Section 17.56.060.

For parcels inside the Tahoe Basin, Section 17.54.020(D)(4)(d) hands height regulation to the Tahoe Regional Planning Agency: all structures there must conform to Chapter 22 of the TRPA Code of Ordinances, and where TRPA Chapter 22 conflicts with Section 17.54.020, TRPA's standard, including its own method of height measurement in TRPA Section 22.2.A, controls. The county code does not itself state the TRPA numeric height limit; property owners in the Basin must check the TRPA Code directly. Relief from any of these county height standards can also be sought through administrative approval under Section 17.60.105(A)(3).