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490-496 23Rd Ave

Central Richmond, SF 94121 1522020A 4 units · 2 fl · 1919

This building has a higher-than-average number of open problems nearby. 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 490-496 23Rd 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 1919
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1919
Total area3,362 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1522020A
Ownership

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

Owner name
Hwang Fmly Lvg Tr
Mailing address
Hwang Peter K & Chang Ju-ch 31 Temescal Ter San Francisco CA 94118
Last sale
120318

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.

490 23rd Ave, San Francisco, CA 94121
492 23rd Ave, San Francisco, CA 94121
496 23rd Ave, San Francisco, CA 94121
494 23rd Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-story multi-family residential building at 490-496 23rd Avenue in the Central Richmond neighborhood, owned by Hwang Fmly Lvg Tr, was constructed in 1919 and contains four units. The building's history shows significant events dating back to 1989-1990, including three electrical wiring alterations and repair work following a fire incident. More recent maintenance records include a 1995 reroofing project (though this permit has since expired) and a 2010 sidewalk/curb permit. In 2005, there was a brief period (approximately one month) when an unpermitted beauty salon operated in the residential building before being addressed by authorities.

The property has been subject to regular routine housing inspections in 2000, which were all resolved promptly. Of particular note is the cluster of recent incidents in late 2024, with multiple reports of graffiti (affecting various public infrastructure including a fire hydrant and poles), instances of garbage and debris on public streets, and a couple of parking-related issues, including one instance requiring enforcement action due to a blocked driveway. These open cases, particularly the graffiti incidents, represent the most recent and ongoing concerns associated with the property, which may impact the immediate environment around the building.

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

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Risk rating

How 490-496 23Rd 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
38th percentile

Out of 2250 buildings in this neighborhood, 1395 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
83%
No DBI
violation
17%
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.

Director's hearing rate, owner's portfolio

Per-building rate of director's hearings across the owner's portfolio.

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 74.5%
Moderate concern 13.7%
Severe concern 11.8%
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

490-496 23Rd Ave event timeline

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

2026
311 Request Mar 11
Other illegal parking
Parking Enforcement

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 490-496 23Rd 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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