Homestead Exemption Portability: What Happens to Your Tax Savings When You Move?

In most states, a homestead exemption does not move with you when you buy a new home — you have to file a brand-new application at the new address, and your new assessed value starts fresh. What can transfer, in a small number of states, is the accumulated dollar gap between a capped assessed value and full market value built up by an assessment-growth cap like Florida's Save Our Homes or California's Proposition 13 — and even then, only through a specific portability program you have to apply for separately.

Key takeaways

• A homestead exemption itself isn't a portable account — it's reapplied for at each address you own and occupy.
• What can transfer, in states that allow it, is the benefit of an assessment cap: the gap between your capped assessed value and market value after years of slow growth.
• Florida caps the transferable Save Our Homes benefit at $500,000 and requires Form DR-501T, filed with your new homestead application by March 1 the year after you move (Fla. Stat. §193.155).
• California's Proposition 19 lets homeowners 55+, severely disabled, or disaster victims transfer their Prop 13 assessed value up to three times, to a replacement home bought within two years, anywhere in the state.
• Outside a specific portability program, moving always resets your assessed value — your old exemption's dollar amount doesn't carry any weight at the new address.

Why most homestead exemptions don't “move” with you

A homestead exemption is a benefit tied to three things at once: a specific property, your ownership of it, and your occupancy of it as a principal residence. Move out, and all three break at the same time — which is why most state homestead statutes require the owner to notify the assessor once eligibility ends, and require a fresh application, proof of ownership, and proof of occupancy at the new address before a new exemption is granted there.

It helps to keep two different things apart. An exemption subtracts a dollar amount (or percentage) from your assessed value every year you qualify — that part genuinely resets at a new address, in every state. An assessment cap is a different mechanism: it limits how fast your assessed value is allowed to grow year over year while you keep the same home, which means the longer you stay, the wider the gap between your artificially low assessed value and the home's real market value becomes. Portability programs move that gap, not the exemption.

Florida's Save Our Homes portability

Florida's Save Our Homes limitation caps the annual growth of a homesteaded property's assessed value at the lesser of 3% or the change in CPI, no matter how much the home's real market value rises (Fla. Stat. §193.155). Over years of ownership in a rising market, that produces a large, growing gap between assessed value and market value — the “SOH benefit.”

Portability lets you carry up to $500,000 of that accumulated gap to a new Florida homestead, reducing the new home's starting assessed value instead of forcing you to begin at full market value. You claim it with Form DR-501T, filed alongside your new homestead application, due by March 1 of the year after you establish the new homestead — and you generally have up to three years after leaving your old homestead to make the move and still port the benefit, a window that was extended from two years by a 2021 constitutional amendment.

For example: if your old home had a $600,000 market value but a Save Our Homes-capped assessed value of $350,000, your accumulated benefit is $250,000 — the full amount, since it's under the $500,000 cap. Move to a new Florida homestead worth $700,000, and portability lets you start that home's assessed value at $450,000 instead of $700,000, before any dollar exemptions are even subtracted.

California's Proposition 19 base-year value transfer

California works differently. Under Proposition 13, your home's assessed value is fixed at its purchase price (the “base year value”) and can rise no more than 2% a year regardless of market value — normally, buying a new home resets that base year value to the new purchase price. Proposition 19 creates an exception: homeowners who are 55 or older, severely and permanently disabled, or victims of a wildfire or other governor-declared disaster can transfer their old base year value to a replacement home purchased within two years, anywhere in California, up to three times in their lifetime — a significant expansion from the one-time-only transfer allowed under the Propositions 60/90/110 rules Prop 19 replaced.

If the replacement home costs more than the original, the excess isn't simply forgiven: it's added to the transferred base year value on a sliding scale depending on timing relative to the sale (roughly full excess value if bought before the sale, with smaller additions the longer you wait afterward, up to two years). This base-year transfer is separate from California's flat $7,000 Homeowners' Exemption (Cal. Const. art. XIII, §3(k)), which any owner-occupant can claim regardless of age or portability eligibility, at any address, every time they requalify.

What if your state doesn't offer portability at all?

Most states have neither an assessment-growth cap nor a portability program, which makes the question simpler, if less generous: you file a new homestead application at your new home (see our guide on how to apply for a homestead exemption), and your assessed value starts at or near the home's purchase price or appraised market value, full stop. Texas's own homestead statute makes the “no double homestead” rule explicit: an applicant must not claim a homestead exemption on any other residence in or outside Texas at the same time.

If you're comparing states that limit assessment growth at all — the mechanism portability is usually built on top of — see our roundup of states that freeze or cap property taxes, and use the savings calculator to estimate what a fresh assessment would mean for your specific new home.