Free SF apartment background check

1890 Jefferson St

Marina, SF 94123 0912003 9 units · 3 fl · 1934

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 1890 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 1934
2 or more units
9 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
Units9
Floors3
Year built1934
Total area9,042 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot0912003
Ownership

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

Owner name
Yuen & Chan Family 2007 Tr
Mailing address
1520 Siskiyou Dr Walnut Creek CA 94598
Last sale
121319

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 9-unit multi-family residential building at 1890 Jefferson St in the Marina district, owned by the Yuen & Chan Family 2007 Trust, has undergone significant improvements since its 1934 construction. The building has received substantial renovations over the years, including comprehensive kitchen and bathroom remodels in multiple units (101, 102, 201, 202, 203, 302, and 303) between 2006-2007, the addition of a second bathroom in Unit 302 in 2018, and a complete fire alarm system upgrade in 2020 costing $39,100. Recent mechanical improvements include the replacement of the domestic boiler in 2021 and the installation of low-frequency sounders in all sleeping areas to meet fire code requirements. The building has experienced several fire alarm system issues, with violations noted in June 2024 and November 2021, though both were subsequently addressed. A centralized alarm systems inspection in 2005 revealed several fire safety concerns, including issues with fire escape drop ladders and egress obstructions, which were abated by August 2005.

The property's maintenance history shows attention to critical systems, including multiple boiler replacements (2009, 2021) and roofing work (1998). Three routine housing inspections in 2000, 2005, and 2011 were conducted, with all violations addressed. The building has experienced occasional fire alarm system malfunctions and false alarms, with no civilian injuries reported in any incidents. Recent infrastructure challenges include a sewage backup in December 2023 and a damaged side sewer vent cover in October 2022, both of which were resolved. The property has also faced several parking-related issues, with multiple complaints about blocked driveways between 2020-2021. While the building has had its share of maintenance and compliance issues over the years, most have been promptly addressed, with recent fire safety violations being the most significant ongoing concern. The most recent building improvement was a June 2024 violation related to alarm system maintenance, though this may have been resolved based on subsequent fire department inspections.

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

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Risk rating

How 1890 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
13th percentile

Out of 988 buildings in this neighborhood, 860 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
43%
No DBI
violation
57%
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 25.0%
Moderate concern 55.9%
Severe concern 19.1%
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

1890 Jefferson St event timeline

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

2026
311 Request Apr 26
Encampment
Encampment
311 RequestMar 22
Parking on sidewalk

See all 11 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1890 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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