Can I Claim My Parents Riverside House as Domicile

Lillian discovered a codicil to her mother’s trust was improperly executed after probate had already begun. The resulting legal battle, simply to have the amended document recognized, cost her over $35,000 in attorney’s fees and delayed the distribution of assets by nearly a year. These seemingly small errors in estate planning can have devastating financial consequences.

The question of establishing domicile – where you legally reside for tax and estate purposes – often arises when clients inherit property, especially a home. Many assume simply owning property equates to establishing domicile, particularly if it’s a cherished family home like Lillian’s mother’s place in Riverside. However, that’s a misconception. Ownership alone is insufficient; you must demonstrate intent to make that location your permanent home.

The California Franchise Tax Board (FTB) isn’t interested in surface-level connections. They delve deeply into your life, scrutinizing everything from your driver’s license and voter registration to where you receive mail and maintain bank accounts. Claiming your parents’ house as your domicile when your primary life remains elsewhere is a significant undertaking, and one that requires meticulous documentation. The FTB is quite aggressive in auditing residency claims, and they will use Form 4600 (Residency Questionnaire) to scrutinize your life, including the location of your dentist, the registration of your pets, and where you keep your safe deposit boxes.

For example, I recently worked with a client who wintered in Palm Springs and maintained a primary residence in Oregon. He believed owning the Palm Springs property automatically established California domicile, allowing him to avoid Oregon state income tax. It didn’t. He spent less than 183 days in California, but more importantly, his closest ties – doctor, financial advisor, social network – remained in Oregon. The FTB ultimately ruled against him, resulting in significant back taxes and penalties. Spending less than 183 days in California does not automatically terminate residency; the FTB uses the ‘Closest Connection’ test (evaluating 19 factors like your primary doctor and social ties) to determine domicile.

Let’s consider how this applies to inheritance. If you inherit a home in California, the property will be subject to California property taxes and potentially California estate tax. However, the property’s cost basis – the original value used to calculate capital gains when you eventually sell – is crucial. As a CPA as well as an attorney with over 35 years of experience, I can tell you that the benefit of a “step-up” in basis is frequently overlooked. When your parent passes away, the property’s basis is adjusted to its fair market value on the date of death, potentially saving you significant capital gains taxes when you sell. Properly establishing California domicile, if justified, can facilitate this process and ensure you capture the full tax advantage.

However, this gets complicated quickly. If the estate is large, and you’re claiming California domicile solely to take advantage of the step-up in basis, it will likely trigger a closer look from the FTB. They’ll want to see a demonstrable shift in your life, not just a claim tied to an inheritance. Furthermore, if the estate includes assets beyond the house – say, brokerage accounts or other real estate – those assets also come into play. For deaths on or after April 1, 2025, a primary residence valued up to $750,000 qualifies for a ‘Petition for Succession’ under AB 2016 (Probate Code § 13151). However, the decedent’s other non-real estate assets (cash, stocks, etc.) must typically remain below the separate $208,850 Small Estate limit to qualify. It’s critical to distinguish between the Small Estate Affidavit (strictly for real property <$69,625, used for timeshares/vacant land) and AB 2016. This “Petition” requires a Judge's Order, unlike an Affidavit.

Moreover, the recent federal tax law changes are significant. The 2026 ‘Sunset’ was averted by the One Big Beautiful Bill Act (OBBBA), which permanently increased the Federal Estate Tax Exemption to $15 million per person effective Jan 1, 2026. However, California’s estate tax rules remain distinct, and establishing proper domicile is essential to navigate these complexities effectively.

Finally, it’s vital to remember that moving yourself doesn’t move your business income; under updated Regulation Section 25136-2 (effective Jan 1, 2026), California sources asset management fees based on the domicile of the underlying investors, not the fund itself. This is a common mistake business owners make when attempting to relocate their tax burden.

What standards do California judges use to determine a will’s true meaning?

In California, a last will and testament is reviewed under probate standards that focus on intent, capacity, and execution. Clear drafting reduces ambiguity, limits misinterpretation, and helps families avoid unnecessary conflict during estate administration.

When a will is drafted with California probate review in mind, it becomes a stabilizing roadmap rather than a source of conflict. Clear intent, proper authority, and compliant execution protect both families and estates.

Controlling Legal Standards for Establishing Domicile and Residency

• Residency Guidelines: FTB Pub 1031 (Guidelines for Determining Resident Status)
  This is the primary resource for the “Closest Connection” test. In 2026, it details how the FTB evaluates 19 factors—including the location of your healthcare providers and social ties—to determine if your presence in the state is “permanent” or merely “transitory.”
• Voter Registration: California Secretary of State – Voter Registration
  Updating your voting address is a critical indicator of intent. For the June 2, 2026, Primary Election, the deadline to register online is May 18, 2026. This serves as a public declaration of your primary home.
• Federal Estate Tax: IRS Estate Tax Overview
  While domicile determines state tax, this resource outlines federal guidelines. It reflects the permanent federal estate tax exemption of $15 million per person ($30 million for couples), effective Jan 1, 2026.
• Proof of Residency: California DMV – REAL ID Checklist
  Since the federal enforcement deadline passed in 2025, a REAL ID is mandatory for domestic flights. This page lists the specific residency documents (e.g., utility bills, tax returns) that the state accepts as proof of a permanent California address.