Guardolphin
Founding spots available · 2 reports free

STR Compliance,
Automated & Guaranteed

Stop spending 4+ hours on quarterly OSTR reports. Guardolphin monitors your property from $15/month and files your San Francisco compliance reports automatically — refunding the $200 report fee in full if the city doesn't accept them. Founding spots are available — get your first two reports completely free.

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

Founding spots available · 2 reports 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 optionally a noise sensor (Tier 2). 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. Report Charged.
You're charged $200 when OSTR accepts your report. Your monthly monitoring fee keeps your property tracked year-round. If a report is rejected, we refund it in full and provide audit guidance at no extra charge.
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

Two plans.
Pay only for accepted reports.

Tier 1
Monitor + File
$15 / month
+ $200 per accepted report · Cancel anytime
1 lock · annual ~$980/yr
  • Smart lock integration — auto-detects hosted vs. unhosted nights
  • Real-time 90-day limit tracking
  • Live compliance status dashboard
  • Automated SF OSTR report generation
  • One-click portal submission
  • Full refund of report fee if rejected
  • Audit guidance at no extra charge
  • + $10/mo per additional lock
Reserve a founding spot →
Recommended for SF
Tier 2
Monitor + File + Protect
$35 / month
+ $200 per accepted report · Cancel anytime
1 lock · annual ~$1,220/yr
  • Everything in Tier 1
  • 24/7 noise monitoring (Minut sensor)
  • Automated guest noise warnings before violations occur
  • Real-time SMS alerts for noise incidents
  • Incident documentation for OSTR disputes
🔊 SF noise ordinance: SF home rentals are subject to city noise laws regardless of lease terms. Violations can trigger neighbor complaints, OSTR warnings, and certificate revocation.
Reserve a founding spot →

Both tiers include smart lock integration and full OSTR report filing.
Multi-lock properties add $10/mo per additional lock. Reports charged on acceptance only.

🛡️
The Guardolphin Guarantee If OSTR does not accept your submitted report, you receive a full refund of the $200 report fee — and we provide audit guidance at no extra charge. Your monthly monitoring fee continues while we resolve it, keeping your property tracked throughout.

Launching Late June 2026

Founding spots are available — get your first two OSTR reports filed completely free.

🎁
Founding User Offer
First report — Free
Second report — 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.

Founding spots available · Priority to hosts who share their setup · SF hosts only

Founding Users · Late June Launch

Founding spots available —
first 2 reports free

We're launching late June. Founding users get their first two OSTR compliance reports filed completely free — monitored continuously, auto-generated, guaranteed accepted. We just ask for your honest feedback.

No credit card required · Founding spots available · 2 reports free · SF hosts only