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California Public Utilities Commission fax number
(415) 703-1158
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Consumer Affairs Branch
Used for: Submitting written complaints or inquiries about utility providers; CAB accepts written complaints by fax or mail and online via the complaint portal.
Fax destination details
- Department
- Consumer Affairs Branch
- Purpose
- Submitting written complaints or inquiries about utility providers; CAB accepts written complaints by fax or mail and online via the complaint portal.
- Address
- 505 Van Ness Avenue, San Francisco, CA 94102-3298
- Voice phone
- 1-800-649-7570
- Website
- Visit organization website
Before you send
- Confirm that this exact department handles your document or request.
- Check the organization website or call its main line for the current fax number.
- Include a cover sheet and any case, member, claim, or form reference required.
- Keep the delivery confirmation with your submission records.
Provide your utility provider name, customer name, account number, service address, mailing address, a contact phone number, and a detailed description of your dispute. Include any supporting documents.
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