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1439 Leavenworth St

Nob Hill, SF 94109 0187004 7 units · 4 fl · 1911

This building has more problems than most buildings in this neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Nob Hill
At or below average
avg 2.4
2
FewerMore

This building has 2 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 1439 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 1911
2 or more units
7 units
Property type
Multi-Family Residential
Zoning
RM3
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
Units7
Floors4
Year built1911
Total area6,602 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0187004
Ownership

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

Owner name
Jerold B Balzer Trust
Mailing address
Thomas Jue Po Box 330188 San Francisco CA 94133
Last sale
030421

Landlord portfolio

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

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Augrented Insights
Initial analysis

1439 Leavenworth Street is a 6-unit, 3-story multi-family residential building constructed in 1911 in the Nob Hill neighborhood, currently owned by the Jerold B Balzer Trust. The property has undergone significant renovations and improvements over the past four years, with major work completed between 2019-2022 including comprehensive unit remodels on multiple floors, installation of new bathrooms, kitchen renovations, window replacements, and updates to fire safety systems including a new fire alarm panel with low-frequency horns. The building's plumbing system received substantial upgrades in 2020-2022, with the installation of tankless water heaters, shower pans, and comprehensive plumbing work across multiple units.

The property has encountered several regulatory issues, most notably regarding boiler permits, with multiple complaints filed between 2016-2020 concerning unauthorized boiler operation. A significant building code violation was documented in October 2020 regarding unpermitted framing, plumbing, electrical, and structural work in unit #7, though this appears to have been subsequently addressed through proper permitting. Recent concerns include a currently active complaint from January 2025 regarding illegal dumping of garbage and hazardous items near the property. The building has experienced typical fire-related incidents, including a CO detector malfunction, water leak, and contained cooking fire, none resulting in injuries. Recent 311 calls from late 2024 indicate ongoing issues with garbage management around the property, though most were promptly resolved by city services.

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

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Risk rating

How 1439 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

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
21th percentile

Out of 1125 buildings in this neighborhood, 889 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
26%
No DBI
violation
74%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 18.4%
Moderate concern 71.2%
Severe concern 10.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1439 Leavenworth St apartment reviews

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The story over time

1439 Leavenworth St event timeline

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

2026
311 Request Mar 16
Garbage and debris
mattress

See all 27 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1439 Leavenworth 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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