Shed Installation Permits in Simi Valley

Local Rule

City of Simi Valley Community Development Department, Building and Safety Division; Simi Valley Municipal Code Title 8 (Building Regulations, amendment to CBC Section 105.2)

Simi Valley exempts a one-story detached accessory building used as a tool or storage shed, playhouse, or similar use from a building permit when the floor area does not exceed 120 square feet and the building is 14 feet or less in height, with no electrical, plumbing, or mechanical systems. A significant portion of Simi Valley's residential lots sit on or near hillside terrain, so projects on slopes greater than 10 percent may need a soils report and engineered grading plan. Parts of the city fall within State or Local Responsibility Areas designated as High or Very High Fire Hazard Severity Zones, triggering additional Chapter 7A ignition-resistant construction requirements.

Source · Verified September 2026

Simi Valley Building Department

Hours and procedures can change — call ahead to confirm.

How This Compares to Ventura County

Simi Valley's own rule is shown above (No permit under 120 sqft). Here is the separate rule that applies at the county level, for context:

Ventura County Resource Management Agency (Building and Safe

For unincorporated Ventura County, a building permit is not required for one-story detached tool and storage sheds if the floor area does not exceed 120 square feet and the height is not more than 15 feet above grade. This exemption applies only to unincorporated areas; incorporated municipalities within Ventura County will enforce their own local codes.

See the full county page

Nearby Cities with Verified Rules

Other cities near Simi Valley with a confirmed shed installation rule:

FAQs

Building It Yourself? Here's What You'll Need

Popular tools and materials homeowners use for a shed installation project:

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