Cal. Pub. Res. Code § 30600

(a) Except as provided in subdivision (e), and in addition to obtaining any other permit required by law from any local government or from any state, regional, or local agency, any person, as defined in Section 21066, wishing to perform or undertake any development in the coastal zone, other than a facility subject to Section 25500, shall obtain a coastal development permit.
(b)
1. (1) Prior to certification of its local coastal program, a local government may, with respect to any development within its area of jurisdiction in the coastal zone and consistent with the provisions of Sections 30604, 30620, and 30620.5, establish procedures for the filing, processing, review, modification, approval, or denial of a coastal development permit. Those procedures may be incorporated and made a part of the procedures relating to any other appropriate land use development permit issued by the local government.
2. (2) A coastal development permit from a local government shall not be required by this subdivision for any development on tidelands, submerged lands, or on public trust lands, whether filled or unfilled, or for any development by a public agency for which a local government permit is not otherwise required.
(c) If prior to certification of its local coastal program, a local government does not exercise the option provided in subdivision (b), or a development is not subject to the requirements of subdivision (b), a coastal development permit shall be obtained from the commission or from a local government as provided in subdivision (d).
(d) After certification of its local coastal program or pursuant to the provisions of Section 30600.5, a coastal development permit shall be obtained from the local government as provided for in Section 30519 or Section 30600.5.
(e) This section does not apply to any of the following projects, except that notification by the agency or public utility performing any of the following projects shall be made to the commission within 14 days from the date of the commencement of the project:
1. (1) Immediate emergency work necessary to protect life or property or immediate emergency repairs to public service facilities necessary to maintain service as a result of a disaster in a disaster-stricken area in which a state of emergency has been proclaimed by the Governor pursuant to Chapter 7 (commencing with Section 8550) of Division 1 of Title 2 of the Government Code.
2. (2) Emergency projects undertaken, carried out, or approved by a public agency to maintain, repair, or restore an existing highway, as defined in Section 360 of the Vehicle Code, except for a highway designated as an official state scenic highway pursuant to Section 262 of the Streets and Highways Code, within the existing right-of-way of the highway, damaged as a result of fire, flood, storm, earthquake, land subsidence, gradual earth movement, or landslide, within one year of the damage. This paragraph does not exempt from this section any project undertaken, carried out, or approved by a public agency to expand or widen a highway damaged by fire, flood, storm, earthquake, land subsidence, gradual earth movement, or landslide.