What year did California pass the first law banning discrimination based on sexual orientation in housing?

California passed the first law banning discrimination based on sexual orientation in housing in 1992. This landmark legislation marked a significant step in advancing civil rights for the LGBTQ+ community in the state. The law aimed to protect individuals from being denied housing or subjected to discriminatory practices based on their sexual orientation, thus acknowledging and addressing the systemic biases that previously existed in housing practices. This was an important development in the broader context of LGBTQ+ rights, as it laid the groundwork for further legal protections and equality measures in California and beyond.

In contrast, the years mentioned in the other options either do not align with significant legal progress on this issue or represent later developments in legal protections for LGBTQ+ individuals.