Permit Requirements: Bostonia vs El Cajon
How do permit requirements rules compare between Bostonia, CA and El Cajon, CA?
El Cajon has fewer restrictions than Bostonia.
Bostonia, CA
San Diego County
In unincorporated San Diego County, fences under 6 feet generally do not require a building permit per County Code Section 91.1.105.2. Fences over 6 feet, retaining wall-fence combinations, and fences in special areas (wildfire zones, scenic corridors) require permits.
View full Bostonia rules →El Cajon, CA
San Diego County
El Cajon does not require building permits for fences up to 6 feet. Taller fences or alternative materials need an administrative zoning permit. Retaining walls may require engineering depending on height and load.
View full El Cajon rules →Key Facts Comparison
| Fact | Bostonia | El Cajon |
|---|---|---|
| Permit Exempt | Fences 6 ft or under (standard) | - |
| Permit Required | Over 6 ft, retaining wall combo, special zones | - |
| Code | County Code §91.1.105.2 | - |
| Agency | County PDS Building Division | - |
| Submission | Site plan with location, height, materials | - |
| Under 6 ft | - | No permit needed |
| Over 6 ft | - | Admin zoning permit |
| Retaining | - | Permit may be needed |
| Contact | - | 619-441-1726 |
Highlighted rows indicate differences between cities.
Bostonia FAQ
Do I need a permit to build a 6-foot fence in unincorporated San Diego County?
No. Fences 6 feet or under are generally exempt from building permits under County Code Section 91.1.105.2. However, fences in special zones or combined with retaining walls may still need permits.
What about a fence on top of a retaining wall?
If the combined height of the retaining wall and fence exceeds 6 feet, a building permit is required. The retaining wall itself may need a separate permit if it exceeds 3 feet.
How do I apply for a fence permit?
Contact the County Department of Planning & Development Services Building Division. Submit a site plan showing the proposed fence location, height, materials, and relationship to property lines.
El Cajon FAQ
Do I need a permit to build a fence in El Cajon?
El Cajon does not require building permits for fences up to 6 feet. Taller fences or alternative materials need an administrative zoning permit. Retaining walls may require engineering depending on height and load.
How much does a fence permit cost in El Cajon?
Under 6 ft: No permit needed. Over 6 ft: Admin zoning permit. Retaining: Permit may be needed. Contact: 619-441-1726.
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