California Code, Government Code - GOV § 66452.26

The expiration date of any tentative map, vesting tentative map, or parcel map for which a tentative map or vesting tentative map, as the case may be, that was approved on or after January 1, 2006, and not later than July 11, 2013, that relates to the construction of single-family or multifamily housing, and for which the expiration date was extended pursuant to Section 66452.25, and that has not expired on or before the effective date of the act that added this section, may be extended by the legislative body for up to 24 months.