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City of Walnut Creek (CA)

California Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2023
Fire Code Version2018 Building Code
SolarAPP+ StatusAdopted
Wet Stamps RequiredNone
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+ Restrictions
Existing Systems,Trenching,MPU,Derate
How Many Plansets Required
3
Revision Required
0
Rough Inspection
None
New Planset Required For Module Swap
0

Stamps

Wet Stamps Required
None
Structural Calculations Required
Yes - Tile Roof
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 B

Snow Load
0
Snow Load Notes

0

Reducible Snow Load Allowed
1
Max Attachment Spacing
96
Structural Notes
Structural only required for **_TILE ROOFS_ **
Minimum Ground On Roof
#10

Electrical

Electrical Load Calcs Required
Derates
Allowed POI
Meter Adapter,PV Breaker,Line Side Taps,Load Side Taps
Panel Schedule Required
Partial Home Backup
Temperature Rating
90
De Rating Ampacity
0.96

Battery / ESS

Unique Battery Placards Needed
0
ESS Notes

avoid garage mount - Can only install battery in garage if:

  • garage is fully insulated
  • garage is sprinklered
  • fire dept. approves plans
Separate ESS Disconnect Required
ESS Disconnect
ESS Elevation Detail Required
No

Plan set

Plan Set Requirements

For jobs with tile roofs, structural calcs are required


EV CHARGING PROJECTS: Add the EV charger to the description of work and to the line diagram.

Electrical Diagram

Standard

Custom Placards Required
1

Ground mount

Ground Mount Fencing Required
Yes
Ground Mount Notes

Ground mount fencing: Where PV source and output circuits operating at max system voltages greater than 30 volts are installed in readily accessible locations, circuit conductors shall be guarded or installed in a raceway

Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the City of Walnut Creek (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.