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860-862 Bay St

Russian Hill, SF 94109 0026016 2 units · 2 fl · 1940

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 Russian Hill
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 860-862 Bay 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 1940
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units2
Floors2
Year built1940
Total area3,700 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0026016
Ownership

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

Owner name
Mazzucco Family 2004 Revoc
Mailing address
Mazzucco Josephine Geraldi 2948 Larkin St San Francisco CA 94109
Last sale
100605

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.

862 Bay St, San Francisco, CA 94109
860 Bay St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The duplex building at 860-862 Bay Street, located in San Francisco's Russian Hill neighborhood, is a two-story multi-family residential structure built in 1940 and currently owned by the Mazzucco Family 2004 Revoc trust. The property has undergone several maintenance and improvement projects over the years, including window replacement in 2013 with wood-clad windows, dry rot repair in 1996, and a reroofing project in 1992 (though this permit is listed as expired). A notable cluster of building violations was documented in August 2012, primarily related to lead paint safety concerns and weatherproofing issues with the siding/stucco, though these violations were abated by September 2012.

Recent activity at the property has primarily involved external environmental issues rather than building-specific problems. In 2023 and 2024, there were several reports related to street-level concerns, including graffiti on the sidewalk in front of the property, illegal postings, and instances of garbage and debris. There were also reports of human waste or urine and graffiti on a transit shelter platform near the property in 2024. While these recent incidents don't directly indicate building maintenance issues, they do reflect ongoing challenges in the immediate vicinity. The building's documented history shows regular maintenance attention over the years, with the most serious historical concerns being the 2012 violations that were promptly addressed within one month.

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

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Risk rating

How 860-862 Bay 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
92th percentile

Out of 1133 buildings in this neighborhood, 91 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
92%
No DBI
violation
8%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Neighborhood location

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

12-Month severity forecast
No violation 83.9%
Moderate concern 6.2%
Severe concern 9.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

860-862 Bay St event timeline

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

2025
DBI Complaint Aug 14
Date last observed: 13-aug-25; exact location: main bldg; building type: residence/dwelling ; additional information: address numbers are not legible. “8” is not clear. ;
Building Inspection Division
DBI ComplaintAug 14
Date last observed: 13-aug-25; exact location: main bldg; building type: residence/dwelling ; additional information: address is a bit deteriorated and not legible and not easy to read from the street;

See all 3 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 860-862 Bay St apartments

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

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