Generator Permit Requirements in San Diego County
Whole-house generator installation requires permits in San Diego County. This guide explains what permits are needed, how the process works, and what to expect during inspections.
Good News: We Handle Everything
As a licensed C-10 electrical contractor, Peak Power Systems handles all permit applications, inspections, and SDG&E coordination as part of your generator installation. You don't need to visit permit offices or schedule inspections yourself.
Required Permits for Generator Installation
Electrical Permit (Required)
- Required for all generator installations
- Covers transfer switch, wiring, and electrical connections
- Cost: $150–$300 depending on system size
- Processing time: 3-7 business days
Gas Line Permit (If Applicable)
- Required for new gas line installation or extension
- Not required if connecting to existing nearby gas line
- Cost: $100–$200
- May be combined with electrical permit
Propane Tank Permit (If Applicable)
- Required for new propane tank installation over 125 gallons
- Fire department may require review in high fire zones
- Propane company typically handles this permit
Permit Process Timeline
- 1Day 1: Permit Application
We submit electrical permit with load calculations and installation plans
- 2Days 3-7: Permit Approval
County reviews and approves permit (may be faster with online submission)
- 3Days 8-10: Installation
Generator installation, transfer switch, and electrical connections
- 4Days 11-14: Inspection
County inspector verifies installation meets code requirements
- 5Days 14-21: SDG&E Notification
Utility acknowledges interconnected generator
Location-Specific Requirements
Setback Requirements
San Diego County requires minimum distances from property lines and structures:
- • 5 feet from property lines (typical)
- • 5 feet from operable windows and doors
- • 3 feet from HVAC intake vents
- • 18 inches minimum from combustible structures
Noise Ordinances
Generator noise levels are regulated in residential zones:
- • Daytime (7am-10pm): 50 decibels at property line
- • Nighttime (10pm-7am): 45 decibels at property line
- • Generac Guardian generators typically operate at 66 dB at 23 feet
- • Strategic placement reduces neighbor impact
Special Considerations for East County
Unincorporated East County areas have specific requirements:
- •Fire zones: Properties in Tier 2/3 fire zones may require additional fire department review
- •Brush clearance: Maintain 10 feet of defensible space around propane tanks
- •Septic setbacks: Keep generator and propane tank clear of septic systems
- •Well setbacks: Maintain distance from well heads per county requirements
SDG&E Interconnection
SDG&E requires notification of interconnected generators. This is not a permit but an acknowledgment that you have backup generation that can safely disconnect from the grid:
- •We submit interconnection documentation after installation
- •Automatic transfer switch prevents backfeed to utility lines
- •No additional fees for standby generator interconnection
- •Processing typically takes 1-2 weeks
Let Us Handle the Permits
Permit paperwork shouldn't delay your backup power protection. Peak Power Systems handles all permits, inspections, and utility coordination as part of every installation. Your only job is to schedule the assessment.