Guardolphin
5 founding spots · Q3 & Q4 reports free

STR Compliance,
Automated & Guaranteed

Stop spending 4+ hours on quarterly OSTR reports. Guardolphin files your San Francisco short-term rental compliance reports automatically — and refunds you if the city doesn't accept them. The first 5 founding users get Q3 and Q4 OSTR reports completely free — priority given to hosts who share their setup.

Free to join · No credit card · SF hosts only for now

5 founding spots available · Q3 & Q4 free
$484
per day fine in SF
4hrs
avg. time per manual report
90s
with Guardolphin
$0
owed if report rejected
How It Works

From chaos to one click

01
Connect Your Property
Link your smart lock and noise sensor. Guardolphin starts tracking un-hosted days and compliance data automatically from day one.
02
We Monitor & Document
Real-time 90-day limit tracking, noise incident logging, and primary residency verification — all running in the background without your involvement.
03
Report Auto-Generated
Before each quarterly OSTR deadline, your complete compliance report is assembled automatically. Review it in seconds, submit with one click.
04
City Accepts. You Pay.
You're only charged $250 when OSTR accepts your report. If they don't, we refund you completely and handle the audit response at no extra cost.
The Stakes

Non-compliance isn't a
small risk

SF hosts can lose their certificate after repeated violations. One missed quarterly report, one noise complaint, one miscounted un-hosted day — and your $80k/year income is at risk.

Guardolphin costs less than a single day of non-compliance fines — and it guarantees the outcome.

🏙️
San Francisco
$484 / day
Quarterly reporting mandatory · Certificate revocation after violations
🗽
New York City
$7,500 / violation
Registration required · Strict enforcement since 2023
🎸
Austin, TX
License suspended
3 complaints = suspension · Noise ordinances strictly enforced
🎵
Nashville, TN
New 2024 rules
Mandatory noise monitoring under active discussion
Pricing

Start free.
Pay only for accepted reports.

Free
Monitor
$0 / forever
No credit card · No commitment
  • 90-day un-hosted limit tracking
  • Live compliance status dashboard
  • Smart lock integration
  • Compliance alerts & deadline reminders
  • Read-only report preview (see exactly what would be filed)
Get early access →
Most Popular
Tier 1
File
$250 / accepted report
$1,000 / year · No subscription
  • Everything in Free
  • Automated SF OSTR report generation
  • One-click portal submission
  • Full refund if report rejected
  • Audit guidance included
Reserve a founding spot →
Tier 2
Protect
$300 / accepted report
$1,200 / year · $280 prepaid first report
  • Everything in Tier 1
  • 24/7 noise monitoring (Minut sensor)
  • Automated guest warnings
  • Real-time SMS alerts
  • Incident documentation for disputes
Reserve a founding spot →
🛡️
The Guardolphin Guarantee If OSTR does not accept your report, you receive a full refund — and we handle the audit response at no additional charge. We earn only when the city accepts.

Launching Early June 2026

The first 5 founding users get their Q3 and Q4 OSTR reports filed completely free.

🎁
Founding User Offer · 5 Spots
Q3 report (Oct 31 deadline) — Free
Q4 report (Jan 31 deadline) — Free
In exchange, we ask for honest feedback and permission to use your experience as a reference. Priority given to hosts who tell us about their property. No credit card required.

5 spots total · Priority to hosts who share their setup · SF hosts only

Founding Users · Early June Launch

First 5 hosts get
Q3 & Q4 free

We launch early June — giving you a full month to connect your property before Q3 data collection begins July 1. The first 5 hosts to confirm get their Q3 report (due October 31) and Q4 report (due January 31) filed completely free. We just ask for your honest feedback.

No credit card required · First 5 to confirm get Q3 & Q4 free · SF hosts only