San Diego STRO License Tiers: 2026 Investor Guide
What Investors Need to Know Before the Window Closes
Overview
San Diego operates a four-tier Short-Term Residential Occupancy (STRO) license system, and for any investor the tier you qualify for determines whether you can run a profitable whole-home rental at all. Tiers 3 and 4 cover whole-home rentals and are capped at roughly one percent of the city's housing stock, which means the supply of available licenses is finite and shrinking. Tier 3 covers whole-home rentals citywide, Tier 4 covers Mission Beach specifically, and either is required for any property rented more than 20 days per year. If you are buying or already own a San Diego STR, understanding which tier applies to your property is the single most important compliance decision you will make.
Why the STRO Ordinance Exists and How It Works
The 1 percent housing stock cap
San Diego built the STRO ordinance to balance tourism revenue against housing availability. The mechanism that matters most to investors is the cap: the number of Tier 3 whole-home licenses is limited to about one percent of the city's total housing units, with Mission Beach treated separately under Tier 4. That cap is the reason licenses behave like a scarce asset rather than a routine permit. Once the allotment is issued, new entrants wait for an existing license to be relinquished or for a lottery cycle to reopen.
How tier eligibility is determined
Your tier is not something you choose freely. It is determined by how the property is used, how many days per year it is rented, and whether it is your primary residence. A part-time host renting a spare room sits in a different tier than an investor running a dedicated whole-home rental year round. Getting this classification right before you buy protects you from purchasing a property you cannot legally operate the way your projections assume.
The 4 STRO License Tiers in Detail
Tier 1: Part-time hosting up to 20 days per year
Tier 1 covers owners who rent their home for 20 days or fewer per year. It is the lightest-touch tier and does not count against the one percent cap. For a serious investor this tier is rarely the goal, but it matters for owners testing the waters before committing to a full operation.
Tier 2: Primary residence hosting
Tier 2 covers hosting in your primary residence for more than 20 days per year, including renting a portion of the home while you live there or renting the whole home while you are away. It is tied to where you actually live, so it does not work for a pure investment property held solely for rental income.
Tier 3: Whole-home citywide (capped)
Tier 3 is the tier most investors need. It permits whole-home short-term rental anywhere in the city outside Mission Beach, with no requirement that you live there. Because it is capped at roughly one percent of housing stock, it is the most competitive and the most valuable license to hold. This is the tier that makes a dedicated investment STR legal in San Diego.
Tier 4: Mission Beach whole-home (capped)
Tier 4 is the Mission Beach equivalent of Tier 3. Mission Beach has historically carried a heavier concentration of vacation rentals, so the city set it apart with its own capped allotment. If your property sits in Mission Beach, Tier 4 is the license you need, and the local cap there is a separate pool from the citywide Tier 3 count.
How to Apply, Renew, and Stay Compliant
Application windows and lottery process
When capped tiers have availability, the city issues licenses through an application and, when demand exceeds supply, a lottery. Missing a window can mean waiting a full cycle, so timing is part of the investment decision. Investors who treat licensing as an afterthought are the ones who get locked out.
Annual renewal requirements
STRO licenses are not permanent. They require annual renewal, payment of the applicable fee, and continued compliance with operating rules. A lapse can cost you the license entirely in a capped tier, which is a far more serious outcome than a late renewal in an uncapped market.
Good Neighbor Policy and enforcement
San Diego enforces a Good Neighbor Policy covering noise, trash, occupancy, and guest behavior. Repeated violations can put a license at risk. For a capped Tier 3 or Tier 4 license, protecting your standing is protecting an asset you may not be able to replace.
Frequently Asked Questions
How many STRO licenses are still available in San Diego?
The capped Tier 3 and Tier 4 pools are limited to roughly one percent of the city's housing stock, and availability shrinks as the allotment fills. The exact number open at any moment changes with renewals, relinquished licenses, and lottery cycles, so the practical answer is that availability is limited and worth checking before you buy. Working with a manager who tracks the pools is the fastest way to know where things stand.
Can I transfer my San Diego STRO license if I sell my property?
STRO licenses are tied to the property and the operator and are generally not freely transferable like a deed. A buyer typically needs to qualify and apply on their own, which means you cannot assume a license conveys automatically with a sale. This is a critical point to confirm during due diligence on any San Diego STR purchase.
What happens if I rent without a STRO license?
Operating without the required license exposes you to fines and enforcement action, and listing an unlicensed property is independently enforceable. In a capped market, getting caught can also damage your ability to obtain a license later. The downside is steep enough that no serious investor should operate without one.
Does San Diego limit how many STRO licenses one person can hold?
The ordinance is structured to prevent any single operator from monopolizing the capped tiers, with limits on how many whole-home licenses one party can hold. This keeps the market accessible to individual investors rather than letting large operators absorb the entire allotment. The specifics are worth confirming if you plan to build a multi-property San Diego portfolio.
