What the Billionaire Exodus to Florida Actually Requires

Since early 2026, a string of reports have described a wave of prominent Californians buying Florida real estate ahead of a proposed 5% California wealth tax on fortunes over $1 billion. Google co-founder Larry Page reportedly spent $173 million on two waterfront Coconut Grove estates. Sergey Brin has reportedly been shopping for a home on Allison Island in Miami Beach. Meta CEO Mark Zuckerberg was reported to have purchased an Indian Creek Island property, with early estimates as high as $200 million before brokers disputed the exact figure. Jeff Bezos has reportedly assembled an Indian Creek portfolio worth well over $300 million.

The framing in most coverage is simple: California’s wealth-tax proposal, still short of qualifying for the ballot, is prompting the ultra-wealthy to establish Florida residency ahead of a reported January 1 cutoff. It is a genuinely newsworthy story about tax policy shaping migration at the very top of the income distribution.

Here is what the headlines mostly skip: a real estate purchase, even an enormous one, does not by itself establish tax residency anywhere. California, like New York and New Jersey, applies a "clear and convincing evidence" standard to residency changes for high earners, and the burden of proof sits with the person claiming to have left.

What actually matters is domicile: where your life is genuinely centered, demonstrated through a combination of factors. Days physically present in each state. Where your immediate family lives. Where you keep your primary doctors, dentists, and other recurring professional relationships. Where your cars are registered and garaged. Where you vote. Where your boards, business interests, and day-to-day work actually happen. A $200 million house on Indian Creek is strong evidence of something, but a state auditor examining a residency claim will look at the whole pattern, not just the deed.

This is precisely why California, New York, New Jersey, Connecticut, Maryland, and Minnesota are consistently named among the most aggressive residency-audit states for departing high earners: their revenue departments know that a change-of-address form is easy to file and that the harder, more valuable facts (where you actually spend your nights, where your family and advisors are, where your recurring life happens) take real documentation to prove.

None of this means the billionaires named in these reports have done anything wrong; most residency changes of this size are handled by teams of advisors precisely because the stakes and the scrutiny are both enormous. But the same principle scales down to anyone considering a similar move: a founder selling a company, an executive relocating ahead of an equity event, or a family office principal shifting a primary residence.

The pattern that survives scrutiny looks the same regardless of net worth: track actual days and nights in each state from day one. Document the new home as a real, occupied residence, not just a deed. Move the recurring professional relationships, doctors, advisors, banking, that anchor daily life. Keep a clear, contemporaneous record of why any retained ties to the old state exist. None of that is exotic. It is simply harder to reconstruct after the fact than to build as you go.

ResidencyIQ organizes exactly this kind of record: a Mobility Map for day and night tracking, an Evidence Vault for the documents that support a residency claim, and AuditIQ to flag gaps and retained-tie exposure before a state examiner does. For family offices and high-net-worth households managing a residency change at any scale, Exposure™ adds advisor sharing so a CPA or attorney can review the record directly.

This article is informational and does not evaluate any individual’s tax situation, including the individuals named in the news coverage above. ResidencyIQ is not a law firm or accounting firm; work with a qualified CPA or tax attorney on your own residency change.

The Real Deal, "Billionaires flee California for Florida," details the named property purchases and the proposed wealth-tax context: https://therealdeal.com/national/2026/02/15/billionaires-flee-california-for-florida/.

Fox Business, "Mark Zuckerberg becomes latest California billionaire to relocate to Florida," covers the Zuckerberg purchase and wealth-tax backdrop: https://www.foxbusiness.com/real-estate/mark-zuckerberg-becomes-latest-california-billionaire-relocate-florida-amid-tax-concerns.

Tampa Bay Times, "Inside the exodus of California tech billionaires to Florida," covers the broader migration trend: https://www.tampabay.com/news/florida/2026/03/15/tech-billionaires-moving-from-california-to-florida/.