Legal Question in Wills and Trusts in California

You should consult with a lawyer who handles disputed estate matters. The answer isn't obvious, and will depend on lots of factors: do you have a written agreement to the split; is this something that has to go through probate; is there a trust setting out the split; do you or the other heir have other claims that can be leveraged into the settlement; can you force a partition; there may be others, but those come to mind right away.

If you cannot resolve this yourselves, your remedy lies with the courts -- that much is clear.

You also don't want to have that conversation with counsel in a public forum like this, where the answers are not confidential. Indeed, no lawyer is likely to advise you in a public forum for that very reason.

I realize that isn't the answer you wanted to hear. Unfortunately, there is no quick-and-easy or obvious solution.

I agree with Mr. Perry: While a thorough analysis of your situation could lead to a fairly prompt settlement, you are likely going to have to resort to court action. Given the stakes, your investment in legal counsel at this point is a clear necessity.