Solar Sanity Checksolar, decoded Independent. Nothing you type leaves your browser.

County of Yolo (CA)

California Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2023
Fire Code Version2018 Building Code
SolarAPP+ StatusAdopted
Wet Stamps RequiredDigital Structural
Fire Setback Enforced1

Codes

NEC Code Version
2023
Fire Code Version
2018 Building Code
Code List

2025 CALIFORNIA BUILDING CODE

2025 CALIFORNIA ELECTRICAL CODE

2025 CALIFORNIA FIRE CODE

2025 CALIFORNIA PLUMBING CODE

2025 CALIFORNIA MECHANICAL CODE

2025 CALIFORNIA ENERGY CODE

2025 CALIFORNIA RESIDENTIAL CODE

2025 CALIFORNIA ADMINISTRATIVE CODE

ASCE Code Specification
ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status
Adopted
Any SolarAPP+ Restrictions
1
SolarAPP+ Restriction Notes

Building-integrated photovoltaics (BIPV).

SolarAPP+ Restrictions
Existing Systems,Trenching,MPU,MPU,Derate,Derate
How Many Plansets Required
3
Revision Required
0
Rough Inspection
None
New Planset Required For Module Swap
0

Stamps

Ee Stamp Required On SLD
No
Wet Stamps Required
Digital Structural
Structural Calculations Required
Yes
Stamp Location On Plans
Unspecified
Date On Stamps
Expiration Date

Fire setbacks

Fire Setback Enforced
1
Setback Notes

Standard

Structural & loads

Wind Speed
110
Wind Notes

Exposure Category C

Snow Load
0
Reducible Snow Load Allowed
1
Max Attachment Spacing
96
Structural Notes

Standard

Minimum Ground On Roof
#10

Electrical

Electrical Load Calcs Required
Derates
Allowed POI
Meter Adapter,PV Breaker,Load Side Taps,Line Side Taps
Panel Schedule Required
Partial Home Backup
Temperature Rating
90
De Rating Ampacity
0.91

Battery / ESS

Unique Battery Placards Needed
0
ESS Notes

Standard

Separate ESS Disconnect Required
ESS Disconnect
ESS Elevation Detail Required
No

Plan set

Plan Set Requirements

Roof Pathways:

  • Provide at least two pathways on separate roof planes, each at least 36 inches wide, running from the lowest roof edge to the ridge.
  • At least one pathway must be on the street or driveway side of the roof.
  • For roofs with solar panels, include a 36-inch-wide pathway on the same roof plane as the array, an adjacent plane, or straddling both.
  • Pathways must be over areas strong enough to support firefighters and free of obstructions like vent pipes or equipment.

Line-Side Taps:

  • Line-side taps are allowed, whether using a lug kit or direct wire tap.
Electrical Diagram

Standard

Custom Placards Required
1

Ground mount

Ground Mount Fencing Required
Situational
Ground Mount Notes

1) The AHJ does not permit the use of Nuance racking for ground mount arrays. All designs must use Ironridge racking to comply with requirements.

2) Site plans must include specific measurements:

  • Distance from the house to tanks.
  • Distance from the tanks to the fence lines.
  • Additionally, leech lines require setbacks similar to those for septic tanks. This guideline was noted by J. Rivkin on 1/22/2020.

3) Add fencing if the system is in a public area or poses a safety risk. Fencing is usually not needed for remote, rural locations. Check with the AHJ if unsure.

Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the County of Yolo (CA) building department before you rely on this, and treat it as a research head start, not a ruling. Getting quotes? Run them through the quote checker first.