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3724-3728 23Rd St

Noe Valley, SF 94114 3630016 6 units · 3 fl · 1890

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Noe Valley — not a forecast
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 3724-3728 23Rd 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 1890
2 or more units
6 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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1890
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units6
Floors3
Year built1890
Total area3,240 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3630016
Ownership

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

Mailing address
Yan Victor Kam Hei & Sin Be 675 Silver Ave San Francisco CA 94134
Last sale
April 29, 2004

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

3724 23rd St, San Francisco, CA 94114
3728 A 23rd St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The 6-unit multi-family residential building at 3724-3728 23rd Street in Noe Valley, owned by the Yan-sin Family Trust, is a 3-story structure built in 1890 that has undergone several significant safety and structural improvements over the past two decades. Most notably, in 2014, the building completed a mandatory soft-story retrofit that included new shear walls and foundation work, though it is currently listed as Non-Compliant under the Tier 3 Soft Story program. The building has received recent upgrades to its fire safety systems, with a voluntary fire alarm system upgrade in 2022 and the installation of low-frequency sounders in sleeping areas in 2021 to meet current safety standards.

The property has a history of structural maintenance and safety compliance issues that have been addressed over time. In 2004, the building faced multiple violations all filed on May 7th, including repairs needed for stairs, fire safety concerns, window maintenance, and other security requirements, though these were all successfully abated by August 9, 2004. Structural work in 2009 replaced floor joists and added steel beams at the second floor, while 2014 saw comprehensive structural improvements. There have been occasional maintenance matters, such as dry rot repairs in 2004 and a 2009 complaint regarding fire extinguisher maintenance and peeling paint, both of which were resolved. Recent 311 calls in 2023 primarily concerned street-related issues rather than building-specific problems, with one notable case in January 2020 regarding a sewage backup that was promptly addressed. The building's ongoing commitment to addressing safety concerns is evidenced by recent fire alarm system upgrades and historical compliance with major structural requirements, though the current soft-story non-compliance status remains a notable exception.

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

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Risk rating

How 3724-3728 23Rd 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
40thpercentile

Out of 1879 buildings in this neighborhood, 1127 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
70%
No DBI
violation
30%
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.

Neighborhood location

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

Estimated permit spend (past 7 years)

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

12-Month risk forecast
Moderate failure risk 30%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

3724-3728 23Rd St apartment reviews

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The story over time

3724-3728 23Rd St event timeline

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

2026
311 Request May 16
Homelessness and supportive housing
housing homeless request for service
DBI ComplaintJan 30
Date last observed: 29-jan-26; time last observed: may 2025; identity of person performing the work: ami; floor: 2nd; unit: d; exact location: main bldg; building type: residence/dwelling mold; ; additional information: i observed corrosion and organic growth around windows. i attempted to mitigate it by painting, but i am concerned about structural dampness behind the moldings/black mold. i would like a housing inspector to conduct a site visit to check for code violations related to weather-proofing and habitability.;

See all 7 events

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

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Every record we have

Full data for 3724-3728 23Rd St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 3724-3728 23Rd St compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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