Two condos sit three doors apart in the same Pacific Beach building. Same square footage, same floor plan, same ocean glimpse from the primary bedroom. One lists for a premium because the listing sheet includes twelve months of nightly-rental income. The other, nearly identical, sits without that number attached. The difference isn't the unit. It's a piece of paper the seller holds and the buyer, on closing day, does not.
That piece of paper is a Short-Term Residential Occupancy license, and it is the detail most buyers underwriting a San Diego investment property discover only after they've already made an offer. The license does not transfer with the deed. It never has. Under the city's ordinance, a new owner must apply from scratch and compete for whatever room remains in a pool the city caps by design and that has been shrinking all year. If you're comparing coastal San Diego properties for their rental income potential, the number that should worry you isn't the asking price. It's whether a license is even available to replace the one the sale extinguishes.
Why San Diego Built a Four-Tier Cage Around This
San Diego's STRO ordinance, added to the Municipal Code in 2021 under Ordinance O-21305 and enforceable since May 1, 2023, sorts every short-term rental into one of four tiers based on occupancy and location. Tier 1 covers home-sharing under 20 nights a year with no cap. Tier 2 covers whole-home rentals of an owner's primary residence, also uncapped but tied to the owner living there at least six months annually. Tier 3 is the one investors actually want: whole-home rentals of a non-primary residence, available citywide outside Mission Beach. Tier 4 is Mission Beach's own separate system.
Tier 3 is where the ordinance stops being permissive and starts being a lottery. The city caps whole-home, non-primary licenses at roughly 1 percent of its housing stock, a figure different trackers place between about 5,400 and 5,700 licenses total. Every neighborhood outside Mission Beach draws from that same shared number. La Jolla, Pacific Beach, North Park, Ocean Beach, they're all competing for the same shrinking allotment.
The Deed Transfers. The License Does Not.
This is the part that catches buyers who've operated in other markets, where a rental permit often runs with the property. In San Diego, it runs with the person. Licenses are non-transferable between owners and between properties. If a seller has a licensed, income-producing short-term rental and you buy it, that license dies at closing. You are not inheriting a rental business. You are inheriting an empty slot you now have to try to refill yourself, from the back of the line, with no guarantee of a seat.
Verifying whether a Tier 3 license is realistically obtainable, not just whether one currently exists, has to happen before you write an offer that assumes rental income, not after.
There's a second layer buyers sometimes miss even after clearing the city's process. Some coastal condominium and HOA associations write their own restrictions on short-term rentals directly into their governing documents, independent of what the city allows. A property can be fully eligible for a Tier 3 license under municipal code and still be off-limits under its own building's CC&Rs. Both have to check out, not just one.
The Pool Is Shrinking While You Shop
The Tier 3 pool isn't just capped, it's actively draining, and the pace tells you something the sticker price doesn't. In November 2025, the city reported roughly 896 Tier 3 licenses still available under the cap. By mid-July 2026, that number had fallen to about 821. That's a decline of roughly 75 available licenses in under a year, against a citywide inventory that was already scarce.
As of that same July 2026 snapshot, the city had issued 4,840 Tier 3 licenses against the total cap, and total active STRO licenses across all four tiers stood at 8,454 citywide. Within that count, the geographic concentration tells its own story: Mission Beach held 1,323 active licenses, Pacific Beach 1,216, La Jolla 804, Uptown 590, and Ocean Beach 572. Every one of those neighborhoods is drawing against a pool that gets smaller every quarter, not larger.
None of this means a Tier 3 license is unattainable today. It means the math you run in August isn't the math you'll be running by the time you close, and it isn't the math the next buyer runs after you.
Mission Beach Looks Like the Safest Bet. It's the Riskiest One.
If you're shopping for rental income in San Diego, Mission Beach feels like the obvious answer. It's the city's original vacation-rental neighborhood, and its Tier 4 allowance reflects that: up to 30 percent of the neighborhood's housing stock can operate as whole-home short-term rentals, a far higher ceiling than the 1 percent cap everywhere else. That reputation is exactly what makes it dangerous to assume your way into.
The Tier 4 waitlist closed to new applications in August 2025 and has stayed frozen since. As of mid-2026, all roughly 1,098 available Tier 4 licenses had been issued, with zero remaining and the existing waitlist carrying around 120 names as of late July. Under the city's own administration rules, that queue has to shrink to 25 applicants before the tier reopens to new entrants at all, and there's no published timeline for when that happens. A buyer purchasing in Mission Beach for its rental history, without an already-licensed unit specifically, needs to treat that history as a neighborhood pattern, not a personal guarantee.
The Same Street, Two Jurisdictions
Here's a wrinkle that rarely makes it into a listing description. The STRO ordinance only applies within the City of San Diego's nine council districts. Most of La Jolla sits inside those boundaries, but a few unincorporated pockets fall under San Diego County jurisdiction instead, which runs its own separate rules. Two addresses on what feels like the same stretch of coastline can sit in entirely different regulatory systems, one capped under the city's shrinking Tier 3 pool, the other governed by county rules the STRO ordinance never touches. Confirming which jurisdiction a specific parcel falls under, before you assume the city's cap even applies, is its own piece of due diligence.
One more assumption worth retiring early: an accessory dwelling unit on the property doesn't automatically solve the rental math. The Municipal Code prohibits ADUs from short-term rental use unless the unit was permitted as a companion unit before October 15, 2017. A newer ADU, however appealing on paper, isn't a workaround for the capped tiers above it.
What This Changes About How You Underwrite the Deal
If you're evaluating a coastal San Diego property with rental income baked into the pitch, the seller's trailing twelve months of Airbnb revenue tells you what the property has earned under a license you will not receive. It doesn't tell you what the property can earn under a license you'd have to win. Those are two different numbers, and only one of them belongs in your offer.
Before removing contingencies, confirm three things: whether the property's community planning area still has room under the Tier 3 cap or whether it's effectively closed like Mission Beach, whether the building's own HOA documents permit short-term rental independent of the city, and whether the parcel sits inside city limits or one of the unincorporated county pockets that operate under different rules entirely. Enforcement in 2026 leaves little room to guess wrong. The city's Building and Land Use Enforcement team now cross-references every platform listing against the licensing database, and California's SB 346, effective January 1, 2026, requires platforms like Airbnb and Vrbo to share host and listing data with the city and pull unlicensed listings outright. Fines start at $1,000 per day. That's not a cost you absorb quietly while you sort out the paperwork after closing.
Frequently Asked Questions
If a property already has an active STRO license, doesn't that transfer to me at closing? No. The license is tied to the individual host, not the property, and the city's rules explicitly bar transfer between owners or locations. A new owner has to submit a fresh application and compete for whatever room remains in the applicable tier.
Does this apply to properties in Rancho Santa Fe, Del Mar, or Dana Point too? No. The STRO ordinance governs only properties inside the City of San Diego's nine council districts. Rancho Santa Fe, the City of Del Mar, and Dana Point are separate jurisdictions with their own short-term rental rules, which is worth confirming independently if rental income is part of your plan there.
Is there any way to guarantee a Tier 3 license before I close? Not through the city's process. Applications are evaluated against whatever capacity remains under the cap at the time you apply, and that capacity has been declining through 2026. The only certainty available before closing is confirming current availability and jurisdiction, not securing a guaranteed outcome.
If short-term rental income is part of why a San Diego coastal property caught your attention, the license math deserves the same scrutiny as the price. White Label Home Collective works through exactly this kind of transaction detail before an offer goes in, not after. Schedule a private, white-glove consultation to walk through what a specific address can and can't support before you commit to it.
