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City of Atascadero (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
Date SolarAPP+ Accepted
45561
Any SolarAPP+ Restrictions
1
SolarAPP+ Restrictions
Storage Systems,Existing Systems,Trenching
How Many Plansets Required
1
Revision Required
0
New Planset Required For Module Swap
0

Stamps

Wet Stamps Required
None
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
Minimum Ground On Roof
#10

Electrical

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

Structural Criteria document needs to be completed (attached below)


Provide the approval of a California registered design professional for modification of drilling with any restrictions such as minimum edge distance, number of penetrations per truss chord, minimum distance from truss connector plates, etc. or no limitations specifically noted


Provide module manufacturer's top down clamp locations sheet (see page 7 & 9 of q.cell installation manual)



Provide manufacturers info on rail-type systems including allowable span, cantilever and allowable rail splice location.


Show job specific (not typical ) layout or arrays, attachment points, rail splice and cantilevers. Dimension spans and cantilevers.


Provide module manufactures allowable top down clap locations and show rail spacing accordingly (see coppo lewis for example)


Provide solar panel manufacturer's allowable top down clamp locations. For Qcell modules, reference Qcell installation guide below for allowed clamp locations. For other mods, seek install guides from the manufacturer.


Demonstrate module compatibility with attachment system. RockIt attachment system install guide is uploaded below, reference pages 30-35. For other attachment systems, seek module compatibility guides from the manufacturer.


For any unpermitted structures, identify as existing non-permitted 3' gable end access pathways are to be measured from gable end roof framing and may not utilize any part of gable overhang


Provide distance of the conduit off of the roof. (min 1 off roof)


Provide the engineer's approval letter for the rail showing allowable span, cantilever and splice locations.


Remove references to the NEC and provide applicable CEC code references.


Include Atascadero Municipal code on title sheet under Code Information


Per AMC, provide 3' clear walking access each side of the ridge and two 3' paths from eave to-ridge on each roof slope on which modules are located.


Gable end paths are to be measured from load-bearing gable end framing. Show or note gable overhang dimension.



P.V. racks installed on a roof, framed with engineered trusses, shall include written approval from a registered design professional for the modification of wood trusses by drilling, consistent with the requirements of the California Residential Code Section 802.10.4., or install blocking between truss to attach the rack/mounts


Provide manufacturer's information on rail-type systems including allowable span, cantilever and allowable rail splice locations. Show a job specific (not typical) layout of arrays, attachment points, rail splices and cantilevers. Dimension spans and cantilevers. Provide module manufacturer's allowable top down clamp locations and show rail spacing accordingly.

Electrical Diagram

Provide ampacity calculations for both DC and AC conductors based on a temp of 108F and corrected for the number of current carrying conductors in a raceway and conduit exposure to sunlight on or above a roof. (Use GTE calc tables) Max DC current to be consistent with requirements of CEC 690.47(D) Provide an auxiliary array grounding electrode consistent with requirements of CEC690.47 (D)

Non Standard Revision Requirements

The AHJ will issue a plan check comment sheet with spaces for responses to their comments. Complete this sheet and upload with the revised plans.

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 Atascadero (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.