Cal. Pub. Res. Code § 30607.2

(a) Conditions requiring housing for persons and families of low or moderate income, as defined in Section 50093 of the Health and Safety Code, which were incorporated into a coastal development permit issued prior to January 1, 1982, may, at the request of the permittee, be amended or modified by the commission or by a local government having the authority to issue coastal development permits. In approving those amendments or modifications, only those conditions and requirements authorized by Section 65590 of the Government Code may be imposed on the permittee.
(b) Any person who, prior to January 1, 1982, has been issued a coastal development permit which contains requirements for low- and moderate-income housing but who, prior to January 1, 1982, has not performed substantial work on the development site (such as grading, installation of streets, sewers, or utilities, or construction of major buildings) may elect to proceed under either of the following options:
1. (1) To proceed pursuant to all of the requirements of the coastal development permit, in which event the provisions of subdivision (a) shall apply to any subsequent request to amend or alter the coastal development permit in regard to housing requirements.
2. (2) To proceed without complying with the housing requirements contained in the coastal development permit, in which event the housing requirements for the development shall be governed by Section 65590 of the Government Code.
(c) No new coastal development permit or amendment to any existing permit for a sewer project shall be denied, restricted, or conditioned by the commission in order to implement housing policies or programs.
(d) Nothing in this section authorizes or requires the modification of or amendment to any terms or conditions of any previously issued coastal development permit which guarantees housing opportunities for persons and families of low or moderate income where the term or condition has been met through an agreement executed and recorded on or before January 1, 1982, between an applicant and the commission. For previously approved or issued permits which involve new construction of less than 10 residential units, an executed and recorded agreement guaranteeing housing opportunities for persons or families of low or moderate income, which has not been implemented by the transfer of an interest in real property or payment of a fee to a public agency or nonprofit association for the purpose of providing these housing opportunities, shall be voided if the applicant records the notice provided by the executive director of the commission. Further, nothing in this section impairs the commission’s authority to deny, restrict, or condition new permits or amendments to existing permits based on any requirement of this division.
(e) Nothing in this section authorizes or requires the modification of or amendment to any terms or conditions in Permit #P-80-419 issued by the commission with respect to the reservation or administration of sewer capacity for affordable housing in the San Mateo County local coastal program.