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257 23Rd Ave

Central Richmond, SF 94121 1410011 4 units · 2 fl · 1972

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 257 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 1972
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 built1972
Total area3,972 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1410011
Ownership

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

Owner name
Mabel B Wong Revoc Tr
Mailing address
538 27th Ave 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 257 23rd Avenue property is a two-story, four-unit multi-family residential building located in the Central Richmond neighborhood, constructed in 1972 and currently under the ownership of the Mabel B Wong Revoc Tr. The building has maintained a regular pattern of routine housing inspections, with records showing inspections in 1996, 2003, and 2008, all of which were completed without any noted ongoing issues. Most recently, electrical work was performed in February 2024, involving the installation of a new plug in a hallway, which was completed successfully.

The property has experienced several noise-related incidents, particularly during 2019-2021, with multiple reports of excessive noise and amplified sound electronics, including six consecutive reports in March 2021 alone. These noise complaints were all accepted and closed by the relevant authorities, though the specific outcomes are not detailed in the records. Other incidents include a driveway blocking complaint in December 2023 and illegal parking issue in December 2020, both of which were resolved by parking enforcement. A fire complaint from October 2009 was filed but determined to have no merit within one day of filing. While the building's inspection history shows regular oversight and the electrical maintenance work is a positive sign of upkeep, the concentration of noise complaints during specific periods suggests potential challenges with noise management in the vicinity.

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

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Risk rating

How 257 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
71th percentile

Out of 2250 buildings in this neighborhood, 652 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

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 77.2%
Moderate concern 12.7%
Severe concern 10.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

257 23Rd Ave apartment reviews

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The story over time

257 23Rd Ave event timeline

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

2024
Electrical Permit Feb 26
New plug installation for a hallway
Complete

See all 1 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 257 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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