A domestic partnership is very similar to a marriage. Domestic Partnerships are available for heterosexual couples 65 or older and same sex couples of any age. The use of Domestic Partnerships by same sex couples has largely become obsolete because same sex marriage is now legal in California. Many of the rights granted to married couples are also granted to domestic partners but there are distinct differences.
If you want to end a registered domestic partnership, you must also file for divorce, legal separation, or annulment to end your relationship. There is a limited exception where domestic partners can end their relationship in a summary process through the Secretary of State if they have been registered for less than five years and they have no children, no real property, very few assets or debts, a written agreement dividing their property, and a few other restrictions.