You or your spouse must be a resident of California to file (live in CA for at least 6 months and in the county for at least 3 months).
A Legal Separation will address the same issues as in a Divorce. The difference is that you will not be divorced and hence cannot remarry.
As in a Divorce, issues such as division of property, assets and debt, spousal support, child custody, visitation and child support can be agreed upon by the parties so that a court appearance is not necessary. This would necessitate a Legal Separation Agreement or a Stipulation. We offer a low flat fee for this.