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1083-1099 Union St

Russian Hill, SF 94133 0121016 6 units · 3 fl · 1912

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 1083-1099 Union 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 1912
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units6
Floors3
Year built1912
Total area5,395 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0121016
Ownership

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

Owner name
Woo Fmly Tr
Mailing address
Woo Faymond & Jane Trustees 1458 44Th Ave San Francisco CA 94122
Last sale
000000

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.

1091 Union St, San Francisco, CA 94133
1083 Union St, San Francisco, CA 94133
1097 Union St, San Francisco, CA 94133
1089 Union St, San Francisco, CA 94133
1087 Union St, San Francisco, CA 94133
1099 Union St, San Francisco, CA 94133
1085 Union St, San Francisco, CA 94133
1093 Union St, San Francisco, CA 94133
1095 Union St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The 6-unit, 3-story apartment building at 1083-1099 Union St in Russian Hill, built in 1912 and currently owned by Woo Fmly Tr, has undergone several significant improvements and faced multiple maintenance challenges over its recent history. The building completed a mandatory soft-story retrofit in 2018 at a cost of $38,000, demonstrating compliance with seismic safety requirements. Major mechanical upgrades include the replacement of a low-pressure steam boiler in 2010 and a backflow device in 2015. The property had a cluster of building violations and complaints in late 2009 through early 2010, primarily concerning heat-related issues, window maintenance, and fire safety systems, all of which were resolved by November 2010.

Recent years have shown improved maintenance, though there has been a notable pattern of parking-related issues in the vicinity, with multiple 311 calls in 2023-2024 regarding driveway blockages and sidewalk access. The building's fire safety systems experienced two alarm incidents in recent years, though neither resulted in any injuries or fires. The most recent building inspection records suggest no active violations or complaints, indicating improved property management standards. The property's historical records show regular compliance with routine inspections dating back to 1999-2005, and all known code violations and complaints have been addressed and resolved according to official records.

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

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Risk rating

How 1083-1099 Union 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
58th percentile

Out of 1133 buildings in this neighborhood, 476 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
78%
No DBI
violation
22%
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.

Neighborhood (ZIP code)

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 56.8%
Moderate concern 29.8%
Severe concern 13.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

1083-1099 Union St event timeline

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

2026
311 Request Apr 21
Blocking driveway cite tow
Parking Enforcement
311 RequestFeb 23
Blocking driveway cite tow

See all 7 events

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

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Every record we have

Full data for 1083-1099 Union 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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