San Diego County, CA Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- Governing table
- Schedule C, Zoning Ordinance § 4810
- Designator range
- Letters A through W
- Widest example
- Designator A: 100 ft front, centerline
- Narrowest example
- Designator U: 0 ft side and rear
- Enforcement
- County Planning & Development Services
Summary
Unincorporated San Diego County assigns each parcel a lettered setback designator (A through W) under Zoning Ordinance Schedule C, fixing exact front, side, and rear yard minimums that range from 0 to 100 feet depending on the zone.
SEC. 4805. SETBACK DESIGNATOR NOTATION. Setbacks shall be indicated by a capital letter corresponding to one row of the Setback Schedule at Section 4810 specifying the minimum dimensions of the front, side, and rear yard setbacks. A dash ("-") shall indicate that there are no setbacks required for the property, and may be used only where a dash has been used for the Building Type designator...
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-141: Administrative: Current through Ord. No. 11007 (N.S.), effective 7-10-26 | Regulatory: Current through Ord. No. 11008 (N.S.), effective 7-24-26).
Full Breakdown
Every parcel's use regulations carry a setback letter keyed to Schedule C at Zoning Ordinance § 4810. Designator A requires a 100-foot front setback measured from the street centerline, a 15-foot interior side yard, and a 50-foot rear yard; designator U, the tightest common designator, drops to a 25-30 foot front, a 0-foot interior side (conditions apply), and a 0-foot rear. Front yard setbacks on public streets or narrow private thoroughfares are measured from the road centerline rather than the lot line under § 4805 and the schedule's footnotes. A dash designator means no setback applies to that structure type.
Violations & Fines
Building inside the required setback is a zoning violation enforceable by County Planning & Development Services and can trigger a stop-work order, code enforcement case, or an order to remove or relocate the encroaching structure.
Frequently Asked Questions
How do I find my parcel's setback minimums?
Are front setbacks measured from the street or the lot line?
Sources & Official References
Other rules in San Diego County
California rules heatmap·Compare San Diego County to another location·View the California building setbacks & zoning overview
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