Shed Installation Permits in Rialto

Local Rule

City of Rialto Community Development Department, Building and Safety Division; Rialto Municipal Code Section 18.52.030

Rialto requires a building permit for sheds and accessory storage structures exceeding 120 square feet of floor area; a shed under 120 square feet may be exempt if it meets setback rules, though zoning clearance may still be required. Under Municipal Code Section 18.52.030, a detached accessory building may occupy at most 25 percent of the rear yard, and must maintain 10 feet of separation from the main house if its roof area exceeds 120 square feet. Total lot coverage is capped at 30 percent of the lot area in single-family zones, and accessory structures are generally allowed a 5-foot setback from side and rear property lines.

Source · Verified September 2026

Rialto Building Department

Hours and procedures can change — call ahead to confirm.

How This Compares to San Bernardino County

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

San Bernardino County / local code

California's building code lowers the shed exemption to 120 square feet (a 10x12 shed), below the national 200, with a 12-foot height cap. Anything larger, taller, on a permanent slab, or with electrical or plumbing needs a permit. In San Bernardino County the shed must also meet zoning setbacks (commonly 5 feet from side and rear lines) and, in fire-hazard zones, ignition-resistant requirements.

See the full county page

Nearby Cities with Verified Rules

Other cities near Rialto with a confirmed shed installation rule:

FAQs

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