Yes, same sex couples may adopt in California. In fact, California has a long history of non-discrimination in adoption. Generally speaking, California law is among the best in the nation for equality, and California has provided benefits to same-sex partners of state employees since 1999. Through the Domestic Partnership Act of 1999, California became the first state in the United States to recognize same-sex relationships in any legal capacity. Domestic partnerships are considered equivalent to legal definitions of recognized and performed same-sex unions in other states of the United States and other nation-states.
California is seen as one of the most liberal states in the U.S. in regard to lesbian, gay, bisexual, transgender (LGBT) rights, which have received nationwide recognition since the 1960s. Same-sex sexual activity has been legal in the state since 1976. Discrimination protections regarding sexual orientation and gender identity or expression have been adopted statewide since 2003. Public schools are also required to teach about the history of the LGBT community and transgender students are allowed to choose the appropriate restroom or sports team in regard of their gender identity. Mental health providers are prohibited from participating in reparative therapy for LGBT minors. California also became the first state in the U.S. to legalize domestic partnerships between same-sex couples in 1999. Same-sex marriage was legalized in 2008 for five months until voters approved a ban in November of the same year. After the Supreme Court refused to recognize the legal standing of same-sex marriage opponents on June 26, 2013, the ban was no longer enforceable, allowing same-sex marriages to recommence starting on June 28. Same-sex adoption has also been legal statewide since 2003, allowing step adoption and joint adoption between same-sex couples. In 2014 California became the first state in the U.S. to officially ban the use of gay panic and trans panic defenses in murder trials. In 2015 California became the first state in America to agree to pay for transgender prison inmates to receive sex reassignment surgery. Most support for LGBT rights can be seen in the largest cities, such as Los Angeles, San Diego, and San Francisco, as well as many cities on the Pacific coast. Recent polls have indicated that a majority of Californians support same-sex marriage.