The Blended Family Estate Plan

What’s inside the guide

• Where California’s default inheritance rules assume a first marriage, and why that assumption breaks down in a blended family
• The specific gaps where those defaults quietly leave a spouse, a stepchild, or a child from a prior relationship out
• How to weigh protecting a surviving spouse against preserving an inheritance for children from a prior marriage
• The documents that put your choices in writing instead of leaving them to default law
• How to pick, on purpose, who is protected and who isn’t left to guesswork

Do stepchildren inherit anything in California if there’s no will or trust?

Generally no. Under California’s intestate succession statutes, a stepchild who was never legally adopted does not inherit from a stepparent’s estate. The same is true for an unmarried partner. If you want a stepchild to inherit, you have to say so in a will or trust, because the default law will not do it for you.

If I die without a plan, does my spouse get everything or do my kids?

It depends on what kind of property it is. Community and quasi-community property passes entirely to the surviving spouse. Separate property is split differently: the spouse’s share depends on how many children survive and whether parents or siblings are also living, which in a blended family can mean a spouse and a stepchild end up co-owning assets neither of them planned for. Writing your own plan is the only way to control that outcome instead of letting the statute decide it.

Can I provide for my spouse without disinheriting my own kids?

Yes, but it takes deliberate drafting, not the default plan most people assume they have. Blended families typically need trust provisions that give a surviving spouse use of certain assets during their lifetime while locking in what ultimately passes to each spouse’s own children, rather than relying on the surviving spouse to eventually do right by stepchildren.

If your current plan predates a second marriage or blended household, start with a trust health check to see where the old assumptions no longer fit.