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345 Leavenworth St

Tenderloin, SF 94102 0334002 31 units · 4 fl · 1919

A handful of records on file over the last seven years, and our model predicts a high risk of further maintenance problems 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 Tenderloin — not a forecast
At or below average
avg 12.1
6
FewerMore

This building has 6 novs (7y), at or below the Tenderloin average of 12.1.

This building's 72% risk is high in absolute terms; it still rates lower-risk here because buildings in Tenderloin generally score worse. The colour is relative to the neighborhood, the percentage is not.

Augrented Insights
Initial analysis

The 31-unit, 4-story residential building at 345 Leavenworth Street in San Francisco's Tenderloin neighborhood, owned by Albert & Yvonne Woo, has experienced a series of concerning maintenance and safety issues over recent years. Most notably, there are active complaints from September 2026 reporting water intrusion, mold, hazardous outlet wiring, and plumbing leaks, with claims that the landlord has stopped addressing violations. Previous complaints from late 2025 documented problems with exposed electrical wiring, stairway safety issues, and concerns about a trash chute/fire escape and boarded elevator. In late 2022, the building faced multiple violations including inoperable heating systems, electrical service issues, and problems with unit doors and plumbing fixtures.

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

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Rent & eviction protection

Is 345 Leavenworth 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 1919
2 or more units
31 units
Property type
Multi-Family Residential
Zoning
RC4
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 1919
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
Units31
Floors4
Year built1919
Total area16,600 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0334002
Ownership

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

Mailing address
450 4th Ave San Francisco CA 94118
Last sale
July 27, 1989

Landlord portfolio

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

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Risk rating

How 345 Leavenworth 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
83rdpercentile

Out of 172 buildings in this neighborhood, 29 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
28%
No DBI
violation
72%
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 size

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

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

12-Month risk forecast
High failure risk 72%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

345 Leavenworth St apartment reviews

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On the map

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The story over time

345 Leavenworth St event timeline

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

2026
DBI Complaint Sep 02
Date last observed: 01-sep-26; time last observed: 11:10; floor: all; exact location: main bldg; building type: residence/dwelling water intrusion; hazardous outlet wiring; plumbing leak; mold; ; additional information: the building has mold and many issues. the landlord has given up and not fixing or addressing so many violations. please come help ;
Housing Inspection Services
311 RequestAug 23
Garbage and debris

See all 26 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 345 Leavenworth St apartments

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

Side by side

How 345 Leavenworth St compares to the neighborhood

This building against comparable properties in Tenderloin. Toggle filters to narrow the peer group.

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

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