City of San Mateo Law Library
City of San Mateo Municipal Code.

23.70.070 Local Amendment Regarding All-Electric Requirements for New Nonresidential Construction

(a) Green Building Code Section 5.106 "Site Development" is amended to include new subsections as follows:

5.106.13 All-electric buildings. New construction buildings shall comply with Section or so that they do not use combustion equipment or are ready to facilitate future electrification. New construction. All newly constructed buildings shall be all-electric buildings.


1. Nonresidential buildings containing kitchens located in a place of public accommodation, as defined in the California Building Code Chapter 2, may apply to the local enforcing agency for a modification to install commercial food heat-processing equipment served by fuel gas. The local enforcing agency may grant the modification if they find:

a. A business-related need to cook with combustion equipment; and

b. The need cannot be achieved equivalently with an electric heating appliance; and

c. The applicant has installed energy efficient equipment based on Energy Star or California Energy Wise qualifications, as available.

d. The applicant shall comply with Section

2. Laboratory areas within Non-Residential Buildings may contain non-electric Space Conditioning Systems. To take advantage of this exception, an applicant shall provide third party verification that the All-electric space heating requirement is not cost effective and feasible.

3. If the applicant establishes that there is not an all-electric prescriptive compliance pathway for the building under the California Building Energy Efficiency Standards, and that the building is not able to achieve the performance compliance standard applicable to the building under the Energy Efficiency Standards using commercially available technology and an approved calculation method, then the local enforcing agency may grant a modification. The applicant shall comply with Section

Inactive Fuel Gas Infrastructure may be extended to spaces that are anticipated to qualify for the exceptions contained in this chapter. The inactive Fuel Gas Infrastructure shall not be activated, have a meter installed, or otherwise used unless the exemptions specified in this chapter have been confirmed as part of the issuance of a building permit. If the Fuel Gas Infrastructure is no longer serving one of the exceptions contained in this chapter, it shall either be capped, otherwise terminated, or removed by the entity previously entitled to the exemption, in a manner pursuant to all applicable Codes.

The City of San Mateo shall have the authority to approve alternative materials, design and methods of construction or equipment per California Building Code Section 104. Requirements for combustion equipment. Where combustion equipment is allowed per exceptions under Section, the construction drawings shall indicate electrical infrastructure and physical space accommodating the future installation of an electrical heating appliance in the following ways, as certified by a registered design professional or licensed electrical contractor:

1. Branch circuit wiring, electrically isolated and designed to serve all electrical heating appliances in accordance with manufacturer requirements and the California Electrical Code, including the appropriate voltage, phase, minimum amperage, and an electrical receptacle or junction box within five feet of the appliance that is accessible with no obstructions. Appropriately sized conduit may be installed in lieu of conductors; and

2. Labeling of both ends of the unused conductors or conduit shall be with "For Future Electrical Appliance"; and

3. Reserved circuit breakers in the electrical panel for each branch circuit, appropriately labeled (i.e "Reserved for Future Electric Range"), and positioned on the opposite end of the panel supply conductor connection; and

4. Connected subpanels, panelboards, switchboards, busbars, and transformers shall be sized to serve the future electrical heating appliances. The electrical capacity requirements shall be adjusted for demand factors in accordance with the California Electric Code; and

5. Physical space for future electrical heating appliances, including equipment footprint, and if needed a pathway reserved for routing of ductwork to heat pump evaporator(s), shall be depicted on the construction drawings. The footprint necessary for future electrical heating appliances may overlap with non-structural partitions and with the location of currently designed combustion equipment.