Short answer: Your will is almost certainly still valid. Idaho honors wills properly executed under another state's law (Idaho Code § 15-2-506). But 'valid' isn't 'optimal': Idaho's community property system, your old fiduciary choices, and Idaho-specific language and requirements usually justify an update.
Tens of thousands of people have moved to the Treasure Valley in the last decade, often from California, Oregon, and Washington (affectionately referred to by some as COW’s) and we regularly review their estate plans. Here's the honest assessment framework:
What usually still works: the will itself, a revocable trust, life insurance, and retirement beneficiary designations.
What usually needs attention:
- Community property conversion. If you moved from a separate-property state, assets you brought become 'quasi-community property' for Idaho death purposes (§ 15-2-201). If you moved from California or Washington, your community property analysis changes in different ways. Titling of your new Idaho home - including whether to use a community property with right of survivorship deed - should be deliberate, not whatever the closing default was.
- Your fiduciaries are far away. The sister in Sacramento you named as executor and the friend named as health care agent may no longer be practical choices.
- Idaho's medical directive forms. Idaho consolidated its living will and health care power of attorney into a single Advance Care Planning Document (§ 39-4510), registrable with the state's Health Care Directive Registry. Local hospitals know and accept Idaho's form instantly; out-of-state forms can cause hesitation exactly when minutes matter.
- Tax assumptions. Plans built around state estate taxes (Washington, Oregon) carry structure Idaho doesn't need - Idaho has no estate tax. Sometimes that complexity can be simplified away.
We offer free estate plan reviews for new Idaho residents: we'll tell you plainly whether your existing documents need a tune-up, a rewrite, or nothing at all.
Liberty Law Idaho offers flat-fee estate planning and family law services with prices published up front. Schedule a consultation - in person in Meridian or virtually anywhere in Idaho - at libertylawidaho.com or (208) 723-8825.