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3270-3274 23Rd St

Inner Mission, SF 94110 3637019D 6 units · 3 fl · 1913

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 Inner Mission
At or below average
avg 2.6
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.6.

Rent & eviction protection

Is 3270-3274 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 1913
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
NC3
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
Units6
Floors3
Year built1913
Total area6,970 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3637019D
Ownership

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

Owner name
Phong Van & Kieu Loan Duong
Mailing address
Phong Van & Kieu Loan Duong 733 Dwight St San Francisco CA 94134
Last sale
070899

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.

3270 23rd St, San Francisco, CA 94110
3274 23rd St, San Francisco, CA 94110
3272 23rd St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story, 6-unit apartment building at 3270-3274 23rd Street in the Inner Mission, owned by Phong Van & Kieu Loan Duong, was constructed in 1913 and has undergone several significant improvements over the past decades. Most notably, the building completed mandatory seismic upgrades in 2018 as a Tier 4 soft-story retrofit, involving both commercial and residential components, with a total investment of $80,000. In 2019, accessibility improvements were made with the installation of an ADA-compliant bathroom on the first floor, including new plumbing and electrical work. The building has a history of maintenance and compliance issues, particularly evident in a series of violations documented in 2000, which included problems with stairs, windows, combustible storage, and fire safety features, though all were abated by January 2001. More recent years have shown attention to building maintenance and safety, with three fire complaints in 2021 being either found to have no merit or corrected, and the most recent soft-story retrofit work receiving proper certification.

The property has experienced recurring issues with graffiti and sidewalk cleanliness, as evidenced by multiple 311 calls throughout 2023-2024, though most were resolved promptly. A 1996 complaint regarding hazardous flooring conditions was addressed within three months, and there was a reported water leak in 1996 affecting a commercial space, which was resolved over approximately four years. The building's plumbing and electrical systems have received updates as part of the recent renovations, including the installation of new wiring for bathroom facilities in 2019. While the building's historical records show various maintenance challenges, recent improvements and completed safety upgrades suggest a focus on maintaining current building standards.

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

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Risk rating

How 3270-3274 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

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
54th percentile

Out of 2380 buildings in this neighborhood, 1095 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
65%
No DBI
violation
35%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

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.

12-Month severity forecast
No violation 58.5%
Moderate concern 29.8%
Severe concern 11.7%
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

3270-3274 23Rd St event timeline

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

2025
311 Request Dec 20
Garbage and debris
other loose garbage debris yard waste
311 RequestDec 20
Garbage and debris

See all 8 events

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

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Every record we have

Full data for 3270-3274 23Rd 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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