Which San Diego STRO License Tier Do You Need?
How a property is rented in San Diego now determines the STRO license tier. It also determines whether a host can legally operate at all.
Property classification and host residency set the lane. With 4.5% vacancy and sustained rental demand, some owners are reassessing whether to pursue short-term rentals or stick with long-term leasing.
San Diego defines a short-term rental as a stay of fewer than 30 nights.
Tier 1 and Tier 2
Tier 1 allows home share or whole-home rentals for 20 days or less per year.
The host may be off-site.
Tier 2 is home-sharing in a primary residence, including ADUs.
It requires the host to stay on-site and live there 275 days annually.
Tier 3 and Tier 4
Tier 3 applies to whole-home rentals outside Mission Beach for more than 20 days.
It requires non-primary residence confirmation and is lottery capped.
Tier 4 covers coastal and Mission Beach whole-home rentals.
It is lottery capped, with none available.
What Changed in San Diego’s STRO Rules in 2026?
License tier selection still defines what can operate legally in San Diego.
In 2026, attention has shifted toward enforcement and pending policy threats.
No major rule changes were announced.
The 2023 four-tier system remains in place.
Other California cities are adopting software tools to detect unlicensed listings, underscoring the broader enforcement challenges around short-term rentals.
Enforcement Tightens
Tier 3 and Tier 4 operators must file quarterly utilization reports.
These reports include rental days and guest data.
Late filings or falling under 90 days can bring penalties.
That can include fines, suspension, or revocation.
2026 Pressure Points
- Routine utilization audits.
- A tax proposal for whole-home rentals and vacant second homes.
- An eviction loophole (no-fault removals before licensing) that is now being targeted.
Threats Pending
City offices are shaping the implementation mechanics for the proposed tax.
Details are still being developed.
Separate amendments also aim to block eviction-to-short-term conversion pathways.
These changes could arrive in the near term.
San Diego STRO Caps: How Many Licenses Are Left?
Where the remaining STRO capacity sits has become a disruption risk for operators tracking San Diego’s cap-limited tiers.
Caps That Still Have Runway
Tier 1 has 149 issued and remains uncapped for part-time whole-home use with a two-night minimum.
Tier 2 has 2,345 issued and remains uncapped for home sharing tied to onsite residency and primary residence proof.
Caps Under Immediate Pressure
Tier 3, the citywide whole-home category outside Mission Beach, is capped at 1 percent of housing stock.
Remaining Tier 3 licenses rose from 896 in November 2025 to 964 as of February 13, 2026.
This requires monthly monitoring and updates.
Tier 4 in Mission Beach is allocated at 1,097 issued, with zero remaining.
Waitlist dynamics ran from July 1 to August 15, 2025.
How Do You Apply and Stay Compliant With San Diego STRO?
Cap availability only determines whether an operator can enter a tier.
Application disruptions: portal demands
Application Checklist
Prerequisites include an active TOT certificate and an active paid RUBT account.
Uploads must show ownership or a legal right to occupy.
Uploads must show floor plans.
Uploads must show a 24-7 emergency contact.
- Confirm tier based on property type and rental intent.
- Submit through the City STRO Licensing Portal with host and local contact details.
- Pay tier-based fees, with 1,000 dollars due before issuance.
Compliance pressure after approval
Recordkeeping Practices
Listings must display the license number across hosting platforms.
Operators must collect and remit TOT and the Tourism Marketing District assessment.
Rental period and tax records must stay current.
There must be no back taxes owed.
How Do You Avoid Fines (Reports, 90-Day Use, Platform Checks)?
Although San Diego’s STRO program allows approved operators to book nights legally, enforcement pressure concentrates on quarterly utilization reports.
It also focuses on the strict 90-day minimum for Tier 3 and Tier 4 whole-home rentals, plus monthly platform data matching.
Fines Trigger Points
Tier 3 and Tier 4 hosts must file quarterly utilization reports confirming at least 90 rental days per year.
These reports are a common enforcement checkpoint.
The City accepts only the Excel Reporting Template.
Missing deadlines can lead to fines or license suspension.
Hosts must retain transaction records for four years.
These records may be requested during audits or enforcement reviews.
Platform Crosschecks
Airbnb and Vrbo require a valid STRO license number for Platform Verification.
They can block or remove listings that don’t comply.
Platforms also submit monthly booking and revenue data to the City.
Any mismatch between your filings and platform data can be easy to flag.
Assessment
San Diego’s 2026 short-term rental enforcement leaves little margin for error.
License tier selection now drives eligibility, caps, and renewal risk.
Tighter monitoring of 90-day primary residence use and platform verification increases exposure for noncompliant listings.
With remaining permits constrained, late applicants face higher denial odds and operational interruptions.
Fines and suspensions are more likely as reporting gaps and occupancy misstatements are flagged faster.
Operators are moving toward documented compliance or exiting the market.
