Simi Valley, CA Building Setbacks & Zoning: Structure Height Limits (2026)

This Section describes the required methods for measuring the height of structures in compliance with the height limits established by this Development Code, and exceptions to those height limits.

B. Maximum height of structures. The height of each structure shall not exceed the height limit established for the applicable zoning district by Article 2 (Zoning Districts, Allowable Land Uses, and Zone-Specific Standards), or a height limit established for a specific land use or structure by Article 4 (Standards for Specific Land Uses) except as otherwise provided by this Section.

C. Height measurement. The maximum allowable height shall be measured as the vertical distance from the average of the highest and lowest points of the portion of the site adjacent to the building, whether natural or paved surface, to the topmost point of the structure, excluding chimneys or vents. See Figure 3-4.

Figure 3-4. Height Measurement

D. Exceptions to height limits.

1. Roof structures (including mechanical penthouses, chimneys, vents) may exceed the height limits required by the applicable zoning district provided that no additional floor space for the principal use is thereby created.

2. The height of an existing residence or residential accessory structure may be increased up to 10% in height, when it is in the Valley Floor, the site is developed as a detached single-family use, the roof has a minimum slope of 25% (3:12), and the slope increases in height from all property lines.