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786 Vienna St

Excelsior, SF 94112 6340022 2 units · 2 fl · 1908

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 Excelsior
At or below average
avg 1.4
0
FewerMore

This building has 0 novs (7y), at or below the Excelsior average of 1.4.

Rent & eviction protection

Is 786 Vienna 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 1908
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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 built1908
Total area1,790 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6340022
Ownership

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

Owner name
Ruiz Hermes Monzon
Mailing address
227 California Ave South San Francisco CA 94080
Last sale
022305

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 786 Vienna Street is a two-unit, two-story multi-family residential building located in San Francisco's Excelsior neighborhood. Built in 1908 and owned by Hermes Monzon Ruiz, this flats and duplex-style building has an extensive record of maintenance and safety issues, particularly related to fire safety systems. The building has experienced multiple fire code violations over the years, with the most recent citations issued in November 2024 and November 2023 specifically concerning sprinkler system maintenance. Other documented violations include issues with the alarm system (October 2021) and blocked exits (January 2012). A cluster of complaints regarding garbage and debris has emerged recently, with multiple reports in December 2024 and January 2025, all of which have been resolved. There was one significant complaint about unauthorized construction at the rear of the property in August 2021, though this was quickly addressed within three weeks. The building's earlier history includes termite and dry rot remediation work permitted in 1991, though this permit is now expired. While the property has had various fire safety issues documented through both complaints and violations, it's noted that no civilian injuries have been reported from any fire-related incidents, which have been limited to contained cooking fires and malfunctioning smoke detectors.

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

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Risk rating

How 786 Vienna 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
34th percentile

Out of 337 buildings in this neighborhood, 222 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
64%
No DBI
violation
36%
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 location

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

DBI tenant complaints (past 7 years)

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

Neighborhood (ZIP code)

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

12-Month severity forecast
No violation 50.9%
Moderate concern 31.4%
Severe concern 17.7%
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

786 Vienna St event timeline

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

2021
DBI Complaint Aug 25
Building a structure at the rear of the house. structure appears to be framing for a new house.
Building Inspection Division

See all 1 events

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

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Every record we have

Full data for 786 Vienna 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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