City of San Mateo (CA)

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

How Many Plansets Required

3

Revision Required

1

Rough Inspection

None

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

Meter Adapter,PV Breaker,Line Side Taps,Load Side Taps

Panel Schedule Required

Partial Home Backup

Temperature Rating

90

De Rating Ampacity

1

Battery / ESS

Unique Battery Placards Needed

0

ESS Notes

• If battery system, include this note on ELD: Producer's storage device(s) will not cause the Host Load to exceed its normal peak demand.
• Normal peak demand is defined as the highest amount of power required from the Distribution System by Producer's complete facilities without the influence or use of the energy storage device(s).
• Provide anchorage details for the TESLA POWERWALL. Show the operating weight for the energy storage system
• Provide locations of the windows/doors along the wall where ESS storage is to be located
• Provide elevation view showing ESS is at least 3 ft away from any openings (windows or doors) into the dwelling per CRC 328.4.

Separate ESS Disconnect Required

ESS Disconnect

ESS Elevation Detail Required

Yes

Plan set

Cover Page

Add a description of work to the cover sheet stating the system size, number of modules, and additional electrical equipment to be installed. Example: "14 (400w) roof mount solar modules PV rating at 5.6kw + (N) 100a subpanel"

Roof Plan

**BALLASTED SYSTEMS:** * signage or roof markings (e.g., yellow stripes) shall be provided delineating the area around the panel that must be kept free of obstructions. Please specify on the plans. * Electrical connections to ballasted arrays must be installed with flexibility to allow for seismic movement; provide a detail showing this connection. * Please check roof framing members for the additional dead load from ballast blocks and components per manufacturer’s specifications. Provide roof framing plan and check the most conservative loaded roof joists.

Electrical Diagram

Standard

Custom Placards Required

0

Ground mount

Ground Mount Fencing Required

Mesh/Scrim