Street Economics

South Miami, Florida

HJR 1 Homestead-Exemption Tax-Base Exposure

Miami-Dade County . 2025 final assessment roll

Snapshot

The South Miami read

South Miami fits the Bedroom Residential Monoculture archetype. The base is owner-occupied single-family housing at moderate value with thin commercial, industrial, or rental property — this is the maximum-exposure profile in structural terms, because almost every dollar of value is the exact kind of property the amendment exempts. Strip the homesteads and little taxable base remains. At full $250,000 phase-in in 2028, South Miami’s non-school taxable base is exposed by 23.6%, with a 14.5% hit arriving at the $150,000 step in 2027. High homestead share plus low commercial share means the exemption lands on nearly the whole base at once.

Of 16,298 residential housing units, 55.8% are owner-occupied, 12.0% are owned by out-of-state owners, and 32.2% are non-homestead but Florida-owned. That 32.2% Florida-owned non-homestead share is a meaningful structural buffer — it represents local landlords and in-state second-home owners whose units carry no homestead exemption and are not touched by the amendment. Among Florida cities, South Miami ranks 189 of 404 cities by exposure.

Land-use composition

Share of taxable value by category, South Miami, 2025 roll:

Residential value dominates at 73.5% of the roll. Commercial sits at 10.7% — thin but not absent. Multifamily at 6.7% and industrial at 1.7% round out the non-homestead base. The out-of-state ownership figures in this table are parcel-based and measured within each land-use category; the headline ownership split in the snapshot is unit-based and will not match these figures by design.

What the exposure band means

Moderate exposure. A meaningful but absorbable hit. The place has some non-homestead base to lean on. Mitigation is about steering future growth, not emergency response.

Looking ahead

Neither of the following changes the exposure figure above; both shape how South Miami grows its base after the amendment takes effect.

First, beginning January 1, 2027, the annual assessment-increase cap on non-homestead property drops from 10% to 5%, covering commercial and industrial real property and small residential rentals of nine units or fewer. Because capped values can rise only 5% per year, the main engine of base growth in these categories becomes transactions — a sale or change of control resets assessed value to market — so transaction velocity matters more to non-homestead base growth than it did under the old cap.

Second, new Florida residents who did not maintain a Florida permanent residence as of December 31, 2026 phase into the larger exemption over five years rather than receiving it all at once. This cannot be read from the roll, so all exposure figures here assume full application of the exemption. Near-term exposure could run slightly lower than modeled in places with many recent arrivals still inside their five-year window.

Where the opportunity is

These mitigation opportunities are based solely on a read of the tax roll’s land-use composition. They do not account for whether local land development regulations and zoning permit the use, whether there is local obstruction, or the political dynamics that usually decide what actually gets approved. This is a starting point for a conversation, not a development plan.

• Recruit and zone for a commercial and employment spine. At 10.7% of taxable value, commercial is present but thin relative to the residential monoculture. The single highest-leverage move is converting a share of future growth from rooftops to taxable commercial square footage that carries no homestead exemption. A neighborhood-serving retail node, a small office or medical-office cluster, or a light-flex business park on an arterial would each deepen the non-homestead base in a category the amendment does not touch.
• Capture multifamily rental as taxable base. Apartments pay full freight under the amendment. At 6.7% of taxable value, multifamily is a real but underdeveloped part of the roll. Allowing well-sited rental near jobs and transit adds non-homestead value and workforce housing at the same time, and the 32.2% Florida-owned non-homestead residential share signals that a local rental market already exists and can be deepened.
• Concentrate commercial and rental growth along an existing arterial or corridor rather than scattering it. A real non-homestead spine in one place is more durable than thin uses spread across the city. Direct new commercial square footage and well-sited rental to that corridor so the base builds critical mass.
• Prioritize commercial and industrial parcels for any future municipal growth rather than more subdivisions. Industrial sits at only 1.7% of taxable value. Any expansion of the city’s footprint that adds commercial or industrial square footage deepens the non-homestead base instead of the monoculture.
• Protect and intensify any existing employment anchor — hospital, college, distribution facility, government office. These are the non-homestead taxpayers already in place and the most defensible part of the base.

Watch-out: do not solve a revenue hole by approving more single-family subdivisions. Each one adds homestead value the amendment will exempt while adding service demand the millage must cover. That is the structural trap that created the exposure in the first place.

Source and scope

All figures are computed from the Florida Department of Revenue 2025 final assessment roll, the most recent certified roll in the state’s possession. The roll is used as a structural proxy for South Miami’s tax-base composition and homestead exposure — it is not a dollar forecast for any specific budget year. HJR 1 / CS-HJR 1F is on the November 2026 ballot; the 2026 roll is the assessment roll in place when voters decide. If the amendment passes, the first roll actually affected is the 2027 roll at the $150,000 step, followed by the 2028 roll at full $250,000 phase-in. When the 2026 and later rolls are certified, the analysis re-runs on the new data.

Ownership shares are of residential housing units. The out-of-state ownership figure is a mailing-address proxy: it counts units whose owner’s mailing-address state in the roll is a non-Florida state or country. It undercounts true outside ownership — an out-of-state owner using an in-state LLC address counts as Florida — and it does not prove where an owner actually lives. This read is a land-use-composition starting point, not a full fiscal, economic, or legal plan.

Place: south miami