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City of Calistoga (CA)

California Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2023
Fire Code Version2018 Building Code
SolarAPP+ StatusPiloting
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
Piloting
Date SolarAPP+ Accepted
44669
Any SolarAPP+ Restrictions
1
SolarAPP+ Restrictions
Existing Systems,Trenching,MPU,Derate
How Many Plansets Required
2
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 B

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

Demonstrated compliance with structural requirements, if a residence has more than one layer of roofing. The applicant may request a pre-installation inspection by the Building Official to determine if structural calculations per the Building Standards Code are required.

Minimum Ground On Roof
#10

Electrical

Electrical Load Calcs Required
Derates
Allowed POI
Line Side Taps,PV Breaker,Meter Adapter,Load 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

In some cases, it may be possible to reduce the size of the main circuit breaker to accommodate the addition of a PV breaker and still not exceed the bus bar rating. This requires that a “load calculation” of the house electrical power consumption be made in order to see if this is an acceptable solution

Electrical Diagram

One-line diagram of system

Ground mount

Ground Mount Fencing Required
Mesh/Scrim
Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the City of Calistoga (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.