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747 Vienna St

Excelsior, SF 94112 6339033 2 units · 2 fl · 1911

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 747 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 1911
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 built1911
Total area1,702 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6339033
Ownership

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

Owner name
Jianwen Jin & Yu Yuan Rev L
Mailing address
Jianwen Jin & Yu Yuan, Trus 666 Lincoln Ave Los Altos CA 94022
Last sale
031914

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 747 Vienna Street in the Excelsior neighborhood, owned by Jianwen Jin & Yu Yuan Rev L, is a two-story flats and duplex structure built in 1911. The property has had several significant events, most notably the unsuccessful attempt at a rear addition project in 2004 that resulted in an expired permit and subsequent violation notice in 2009, though this violation was eventually abated in 2012. The building underwent an electrical system upgrade in 2003, with the installation of a new 200-amp meter system for both units, which was completed successfully.

Recently, the property has experienced multiple issues requiring attention, particularly in early 2025, including reports of sewage back-up discharge, furniture debris on the street, and various parking violations. Between December 2024 and January 2025, there were several parking-related incidents recorded, including citations for parking on sidewalks, an abandoned vehicle situation, and complaints about double parking and driveway blocking. A false fire alarm incident was recorded at the property, though no civilian injuries were reported. The building's historical permit and violation records suggest that while major structural modifications have not been completed, the property has received basic infrastructure improvements in the past. The recent cluster of parking and sanitation issues appears to be more related to the immediate vicinity of the building rather than the building's internal conditions themselves.

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

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Risk rating

How 747 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
55th percentile

Out of 337 buildings in this neighborhood, 152 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
72%
No DBI
violation
28%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

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 73.0%
Moderate concern 13.6%
Severe concern 13.4%
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

747 Vienna St event timeline

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

2024
311 Request Dec 28
Parking on sidewalk
Parking Enforcement
311 RequestApr 08
Parking on sidewalk

See all 2 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 747 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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