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595-599 Ofarrell St

Tenderloin, SF 94102 0323018 9 units · 3 fl · 1918

This building has a higher-than-average number of open problems nearby. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Tenderloin
At or below average
avg 12.0
6
FewerMore

This building has 6 novs (7y), at or below the Tenderloin average of 12.0.

Rent & eviction protection

Is 595-599 Ofarrell St rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1918
2 or more units
9 units
Property type
Multi-Family Residential
Zoning
RC4
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units9
Floors3
Year built1918
Total area4,890 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0323018
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Huynh Huy Tan
Mailing address
755 47th Ave San Francisco CA 94121
Last sale
091919

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

599 Ofarrell St, San Francisco, CA 94102
595 Ofarrell St, San Francisco, CA 94102
Augrented Insights
Initial analysis

The 9-unit, 3-story apartment building at 595-599 O'Farrell Street in the Tenderloin, owned by Huynh Huy Tan and built in 1918, has undergone several significant improvements in recent years, particularly in fire safety. Most notably, in 2021-2024, the building received substantial fire safety upgrades including a new fire alarm system, installation of low-frequency sounders in sleeping areas, and a new water heater upgrade. The property has experienced recurring fire safety inspections and complaints, with issues primarily related to alarm systems and extinguishers between 2017-2024, though records indicate these were generally addressed promptly as conditions corrected or found to have no merit. The building's maintenance history shows regular upkeep, including a kitchen remodel in Unit 4 in 2016 and plumbing improvements, though there was one notable incident in February 2024 involving exhaust flue smoke migration from the ground floor restaurant into residential areas, which was resolved by March 2024.

The property has been subject to routine safety inspections over the years, with several violations and complaints primarily focusing on fire safety compliance between 2008-2024. Recent violations in March 2024 related to fire escape ladders, compliance affidavits, and gas utility shutoff requirements were abated by April 2024. The building's infrastructure maintenance includes a reroofing project from 2008 and various electrical and plumbing improvements. Recent 311 calls from January 2025 regarding encampments and garbage debris have been resolved, and the property has undergone multiple inspections to ensure compliance with housing codes, though past issues from 1998 regarding heat and a gutted commercial space were quickly addressed. The ground floor commercial space has operated as El Tesoro Taqueria & Grill, with various permits and inspections noting its presence since 2023.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 595-599 Ofarrell St's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
89th percentile

Out of 172 buildings in this neighborhood, 19 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
40%
No DBI
violation
60%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 12.6%
Moderate concern 45.8%
Severe concern 41.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

595-599 Ofarrell St event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2026
311 Request Jun 18
Garbage and debris
other loose garbage debris yard waste
311 RequestJun 03
Garbage and debris

See all 21 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 595-599 Ofarrell St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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