The True Consequence Matrix:
What San Diego's Vacant Homes Tax Is Likely to Actually Do
A sober accounting of intended outcomes, probable failures, and the perverse effects that policy designers either did not anticipate — or chose not to discuss publicly.
■ Intended Consequences
Increased housing supply in coastal submarkets. The measure's core rationale: compelling owners of vacant second homes to either sell or rent, adding units to a deeply undersupplied market. Research on comparable programs in Vancouver confirms this effect is real but modest — the C.D. Howe Institute's 2024 difference-in-difference analysis found approximately 5,355 fewer vacant units in Vancouver over five years as a result of that city's tax. The San Diego effect, targeting fewer than 3,000 qualifying properties in a city of 830,000 housing units, would be proportionally smaller — measurable in specific coastal ZIP codes, negligible citywide.
General fund revenue for city services. The city projects $9.2–$24.2 million annually — a wide band reflecting genuine uncertainty. Against a structural deficit projected at $88.8–$110 million for FY 2027–28, the tax covers at best 22 percent of the gap even under optimistic assumptions. It is a meaningful but insufficient revenue tool for a city whose voters just rejected a $400 million annual sales tax increase.
Signal that "housing is not a commodity." Proponents openly frame the measure as a values statement about the purpose of residential property. Whether or not it moves housing markets materially, it establishes the political position that idle coastal wealth imposes social costs the city has the right to tax. This rhetorical function is real and will outlast the measure's practical effects.
■ Probable Unintended Consequences
Squatter magnet effect. By creating a formal city registry of properties identified as vacant and unoccupied for more than 180 days per year, the vacancy tax inadvertently generates a publicly accessible map of unmonitored coastal properties — precisely the intelligence that organized squatter networks exploit. California law then requires full civil eviction proceedings to remove occupants, a process that can take four months to over a year in backlogged San Diego County courts. The owner faces both the annual tax liability and the legal costs of reclamation simultaneously.
STR conversion surge that worsens long-term rental supply. The measure explicitly exempts short-term rentals from the vacancy definition. The rational response for many coastal second-home owners is conversion to Airbnb or VRBO — which removes the unit from potential long-term residential use, increases neighborhood transience, and places further pressure on San Diego's already-strained STR regulatory infrastructure. The city is simultaneously trying to limit STR proliferation and creating a financial incentive to expand it.
Acceleration of LLC and trust ownership structures. Sophisticated property owners will accelerate transfer of coastal second homes into legal entities specifically designed to complicate identification and collection — Delaware LLCs, multi-tier family trusts, foreign ownership structures. The tax thus inadvertently incentivizes precisely the opaque ownership arrangements that housing transparency advocates have long sought to reduce. The corporate surcharge provision may paradoxically encourage some owners to restructure ownership to avoid that classification.
Accidental landlord pipeline with tenant protection exposure. Owners who convert to long-term rental to avoid the tax may not realize they are walking into California's AB 1482 Tenant Protection Act regime. Once a tenant resides in the property for 12 months, just-cause eviction requirements apply. An owner who wants to reclaim their beach house for personal use — the very property type targeted by the tax — may find themselves unable to terminate the tenancy without a qualifying legal reason and potential relocation assistance obligations. The intended outcome of rental conversion produces an unintended outcome of involuntary permanent landlordship.
Chilling effect on high-value coastal property investment. If the tax rate escalates over time — as it has in every comparable jurisdiction — prospective buyers of coastal second homes will begin pricing in future vacancy tax liability when valuing properties. This could modestly suppress values in the specific coastal submarkets most affected, reducing property tax revenues that currently fund city services — partially offsetting the vacancy tax receipts and creating a fiscal circularity the IBA did not model.
■ Perverse Consequences
Success reduces revenue; failure preserves it. The tax is structurally self-defeating as a revenue instrument. If owners respond as intended — selling or renting — revenue falls as the taxable base shrinks. If owners ignore the tax and stay vacant — paying the levy — housing supply is unchanged and the housing goal is unmet, but revenue is stable. The city's fiscal interest thus aligns with the tax's policy failure. This creates a quiet institutional incentive to collect rather than convert, undermining the stated housing mission over time.
The units unlocked serve renters who don't need help. Coastal second homes converting to rental inventory generate units priced at $4,000–$10,000+ per month — accessible only to high-income households who are not the city's primary affordability concern. The approximately 9,905 people experiencing homelessness in San Diego County (Regional Task Force on Homelessness, 2025 Point-in-Time Count) and the tens of thousands of cost-burdened working renters paying more than 30 percent of income in rent receive no meaningful benefit from the addition of luxury coastal rentals to the market.
The tax penalizes owners for the condition it simultaneously makes more dangerous. By identifying and publicizing vacant properties, the measure increases squatter risk. By requiring formal civil eviction to remove squatters — a process taking months in an overloaded court system — it increases the duration and cost of that risk. It then taxes the owner for the very vacancy that the city's own squatter law regime makes hazardous to cure. The owner is simultaneously punished for keeping the property vacant and denied the tools to quickly end that vacancy when unauthorized occupants appear.
■ The Rate Escalation Trajectory
Every Comparable City Has Raised Its Rate
At B.C.'s current 4% rate applied to a $3M La Jolla beach house: $120,000/year. San Diego's initial flat fee is $10,000. The gap between those numbers is the escalation runway.
San Diego's fiscal context makes escalation structurally near-inevitable. The city carries a projected structural deficit of $88.8–$110 million for FY 2027–28. Voters rejected a $400 million annual sales tax increase in November 2024. The IBA's own revenue projections for the vacant homes tax fall $65–$100 million short of closing the structural gap even under optimistic assumptions. When revenues disappoint — as they have in Oakland, Washington D.C., and Melbourne — the council will face a binary choice: absorb the shortfall or raise the rate. The constituency paying the tax is small and politically isolated. The constituency benefiting rhetorically from escalation is large and vocal. The outcome is predictable.
■ The Closed Escape Hatch
Prior analyses have noted that owners could avoid the tax by converting to short-term rentals. San Diego's STRO regulatory framework forecloses this for most affected property owners:
- Tier 3 cap at 1% of housing stock — approximately 5,400 whole-home licenses citywide, essentially at capacity in coastal neighborhoods most targeted by the vacancy tax.
- One license per person — no portfolio strategy possible; owners of multiple second homes cannot convert all of them.
- Non-transferable licenses — an existing STR license does not convey with a property sale, eliminating premium pricing for license-holders seeking to exit.
- Lottery system — no guarantee of license even if cap space exists; wait times indeterminate.
- Setup costs of $15,000–$40,000 — professional photography, furnishings, smart locks, safety compliance, HOA documentation; requires 1.5–4 years of tax savings to break even before first dollar of avoided tax is realized.
- 10.5–13.75% Transient Occupancy Tax — added to state and federal income tax on rental revenue, substantially eroding net yield.
- 24/7 local contact requirement — owners who do not reside locally must hire a property manager, adding 20–30% of gross rental revenue in management fees.
- HOA CC&Rs — many coastal condo and community associations prohibit STR entirely, regardless of city STRO authorization.
The Trap Closes
The owner of a vacant coastal second home in San Diego in 2027 faces a set of options that are each, on examination, more problematic than they initially appear. Long-term rental exposes the owner to AB 1482 tenant protections and the practical impossibility of reclaiming the property for personal use. Short-term rental requires a Tier 3 license that may not be obtainable, carries substantial setup and operating costs, and imposes a 10–14% TOT burden. Selling is a taxable capital gains event that permanently relinquishes the asset. Paying the tax — for owners of properties worth $2–5 million — is often the path of least resistance at $10,000–$15,000 per year, which represents roughly 0.3–0.5% of asset value. The policy thus achieves its stated housing goals least effectively for the highest-value properties it most prominently targets.
■ What the Research Actually Says About Vacancy Taxes
"While the previous findings certify the tax's efficacy in improving housing availability, the same cannot be said about affordability, as we find no impact whatsoever on the average rent."
— C.D. Howe Institute, Ripple Effects: The Impact of an Empty-Homes Tax on the Housing Market, 2024
"Vacancy taxes marginally increase local housing availability, but are no substitute for new construction."
— Shane Phillips, UCLA Lewis Center for Regional Policy Studies
"The primary issue with focusing on taxing housing vacancies is clear: it simply does not affect enough housing to make a significant dent in addressing the massive housing shortages already faced by cities."
— Policy analysis, Omni Arizona, citing Vancouver and Oakland data, 2022
The consensus finding across peer-reviewed research on vacancy taxes in North American cities is consistent: measurable but modest reduction in vacant units; no statistically significant impact on rent levels or overall housing affordability; revenues that typically fall well below projections; and enforcement challenges that grow rather than diminish over time as property owners adapt. The honest policy case for San Diego's measure rests on incremental supply improvement and revenue generation — not transformative housing reform. Whether those modest gains justify the legal exposure, administrative costs, unintended consequences, and escalation risk outlined here is a judgment voters will make in June 2026.
Comments
Post a Comment