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1801 Jefferson St

Marina, SF 94123 0913001 18 units · 3 fl · 1927

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Marina
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Marina average of 1.1.

Rent & eviction protection

Is 1801 Jefferson 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 1927
2 or more units
18 units
Property type
Multi-Family Residential
Zoning
RM3
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
Units18
Floors3
Year built1927
Total area12,237 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0913001
Ownership

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

Owner name
O'Brien Family Trust Dtd 20
Mailing address
William & Anna O'brien, Tru 1590 Granada Dr Burlingame CA 94010
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The O'Brien Family Trust Dtd 20 owns this 18-unit, 3-story multi-family residential building located at 1801 Jefferson St in the Marina neighborhood. Built in 1927, the property has undergone several significant improvements over the years, with the most recent being a comprehensive fire alarm system upgrade completed in January 2024 at a cost of $46,255, including the installation of low-frequency sounders in sleeping areas to comply with current safety codes. The building has a history of addressing fire safety concerns, with multiple fire complaints and violations being corrected, including issues related to fire extinguishers, alarm systems, and sleeping area requirements between 2009 and 2024.

The property has undergone various major renovations, including foundation work, window replacements, and roofing projects in the late 1980s and early 1990s. While the building has maintained a generally active response to safety concerns, including promptly addressing fire safety issues identified through inspections and complaints, there have been some recurring themes in the building's maintenance history. The building's most recent fire safety upgrade in early 2024 demonstrates ongoing commitment to resident safety, and the property management has typically responded promptly to violations and complaints when they occur. Recent 311 calls from 2024 have primarily concerned external issues like abandoned vehicles and street cleaning matters, rather than building-specific concerns.

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

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Risk rating

How 1801 Jefferson 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
16th percentile

Out of 988 buildings in this neighborhood, 830 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
45%
No DBI
violation
55%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month severity forecast
No violation 28.3%
Moderate concern 49.4%
Severe concern 22.2%
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

1801 Jefferson St event timeline

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

2026
311 Request Jun 08
Garbage and debris
furniture
311 RequestMar 25
Blocking driveway cite tow

See all 10 events

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

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Every record we have

Full data for 1801 Jefferson 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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