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333 31St Ave

Central Richmond, SF 94121 1402005 4 units · 2 fl · 1924

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 333 31St Ave 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 1924
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units4
Floors2
Year built1924
Total area3,512 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1402005
Ownership

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

Owner name
Kwang Family Trust
Mailing address
333 31st Ave Apt 1 San Francisco CA 94121
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 Kwang Family Trust owns this two-story, four-unit multi-family residential building located at 333 31st Avenue in the Central Richmond neighborhood. The building, constructed in 1924, has undergone several significant maintenance and improvement projects over the years, including a substantial $19,000 re-roofing project completed in 2020 and the installation of a new gas water heater in unit 4 in 2017 (though this permit has since expired). The property's most notable and concerning history occurred in late 2004, when a routine housing inspection resulted in multiple violations requiring attention to various safety issues including egress obstructions, stair repairs, smoke detector installations, and the need for automatic fire sprinklers over garbage receptacles. All of these violations were addressed and officially abated by February 1, 2005.

The building has a documented history of property maintenance and compliance with housing codes, with records showing attention to both major systems (such as roofing and plumbing) and safety concerns. Prior to the 2004-2005 violations, the building underwent code compliance work in 1986 and had a minor backyard stair repair in 2004. The most recent building-related issues appear to be resolved, with no active violations on record as of October 2023. The surrounding area has experienced some parking-related incidents in recent years, including a sidewalk parking violation in 2020 and multiple reports of abandoned vehicles in 2016, though these are external to the building itself and were addressed by appropriate city services.

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

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Risk rating

How 333 31St Ave'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
29th percentile

Out of 2250 buildings in this neighborhood, 1598 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
77%
No DBI
violation
23%
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 permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 70.2%
Moderate concern 20.3%
Severe concern 9.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

333 31St Ave apartment reviews

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The story over time

333 31St Ave event timeline

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

2020
Building Permit Feb 11
Re-roofing
$19,000 · Complete

See all 1 events

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

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Every record we have

Full data for 333 31St Ave 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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