California Advanced Services Fund (CASF) Infrastructure Grant and Revolving Loan Account




CASF grants and loans are designed to assist in the building and/or upgrading of broadband infrastructure in areas that are not served or are underserved by existing broadband providers. Under rules adopted in D.12-02-015, California provides grants of up to 70% of construction costs for projects in unserved areas and up to 60% of construction costs for projects in underserved areas. The Revolving Loan Program provides supplemental financing for projects also applying for CASF grant funding. Using the same project and applicant eligibility requirements as the Infrastructure Grant Program, CASF applicants may obtain loans of up to 20% of projects costs, with a maximum of $500,000.

  • An “unserved” area is an area that is not served by any form of wireline or wireless facilities-based broadband, such that Internet connectivity is available only through dial up service.
  • An “underserved” area is an area where broadband is available, but no wireline or wireless facilities-based provider offers service at advertised speeds of at least 6 mbps download and 1.5 mbps upload.



CASF funding is available to entities with a Certificate of Public Convenience and Necessity (CPCN) that qualify as a “telephone corporation” as defined under P.U. Code section 234 or wireless carriers who are registered with the Commission (i.e., hold a WIR). Wireless carriers need not obtain a CPCN to qualify for CASF funding. For more information on how to register with the Commission see 'Information for Telecommunications Applicants and Registrants in California'.

CASF funding is also available to non-telephone corporations which are facilities based broadband service providers. The Commission shall use the National Telecommunications and Information Administration’s (NTIA) definition of a facilities-based broadband service provider, which is generally defined as any entity providing internet access service or middle mile transport, over its own fixed or wireless facilities to residences, businesses, or other institutions. However, non-telephone corporations must provide last-mile broadband access to households that are unserved by an existing facilities-based provider and only receive funding to provide access to households that are unserved or underserved.

The Commission will consider applications from satellite service providers provided that the applicants are able to prove functionality, and are able to meet the speeds required.

Areas eligible for funding are those considered "unserved" or "underserved" as defined above. However, applicants may provide argument as to why an existing service fails to meet community needs. See: Additional guidance for CASF project application justification  

Projects containing designated priority locations will also be noted as priority.  A designated priority area list is available.



Applications will be accepted on a rolling basis, starting December 1, 2014 (there is no current end date). Please refer to Resolution T-17443 (approved June 26, 2014) which implements new timelines for CASF applicants, including the process for local government agencies and non-telephone corporations to apply as well as how existing providers may exercise their "right of first refusal" (i.e., demonstrates that they will upgrade service in their existing underserved territories within a reasonable amount of time) pursuant to Senate Bill (SB) 740. In addition, this Resolution lists areas in California that various CASF-funded regional consortia groups and state agencies have identified as Priority Areas for broadband infrastructure deployment.

Applications need to be submitted online (CASF APPLICATION AND INSTRUCTIONS) and hard copies also must be mailed separately (postmarked by the date or earlier of the online application submission) to the following two offices:


Communications Division
Attn: California Advanced Services Fund
California Public Utilities Commission
505 Van Ness Ave.
San Francisco, CA 94102

AND to:

Office of Ratepayer Advocates
Re: California Advanced Services Fund
California Public Utilities Commission
505 Van Ness Ave.

San Francisco, CA 94102


The mailed document should follow the format of the checklist and conform to Rule 1.5 of the Commission’s Rules of Practice and Procedure. Documents tendered for filing must be typewritten, printed, or reproduced on paper 8 ½ inches wide and 11 inches long. Any larger attachments must be legibly reduced or folded to the same size. The type must be no smaller than 10 points. The impression must use 1 ½ -line or double spacing, except that footnotes and quotations in excess of a few lines may be single-spaced. Both sides of the paper may be used. A document of more than one page must be bound on the left side or upper left-hand corner. If a transmittal letter is submitted (see Rule 1.13(a)), it must not be bound to the tendered document. All copies must be clear and permanently legible.

Applicants must also submit their project summaries to a distribution list maintained by Communications Division staff.

Instructions on how to submit a CASF application are detailed here. Prospective applicants who have questions about the application process may send an email to



The CASF Application Tool in the California Interactive Broadband Availability Map can be used to select simple proposed project areas and export key information to an excel workbook. Output from the tool can then be pasted into the CASF Application Average Speed Calculator Excel Template to summarize information for infrastructure grant applications. 

Statewide datasets can also be downloaded for more complex project development and analysis:


FAQs (Frequently Asked Questions)



CASF Applications (Project Summaries)

Right of First Refusal Submissions from Incumbent Providers

Commission-Approved CASF Projects  

Immigration Guide