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887-889 Union St

Russian Hill, SF 94133 0119031 2 units · 2 fl · 1917

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 887-889 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 1917
2 or more units
2 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
Units2
Floors2
Year built1917
Total area3,120 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot0119031
Ownership

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

Owner name
Chong D & Helen Koo Revoc T
Mailing address
889 Union St San Francisco CA 94133
Last sale
061901

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.

889 Union St, San Francisco, CA 94133
887 Union St, San Francisco, CA 94133
Augrented Insights
AI summary

The two-story multi-family residential building at 887-889 Union Street in San Francisco's Russian Hill neighborhood is a duplex structure built in 1917, currently owned by the Chong D & Helen Koo Revocable Trust. The building has a documented history of minimal incidents over the past decade, with no major safety concerns reported. The most recent service request occurred in May 2022, involving a general public works matter that was resolved, while June 2021 saw a noted complaint related to bicycle sharing operations. A parking enforcement call in May 2019 regarding a Mustang parked on the sidewalk resulted in an officer response, though the vehicle was unable to be located upon arrival. The only recorded incident directly affecting the building's structure was a non-offensive graffiti case from October 2013, which was promptly resolved by the Department of Public Works. The building's record shows no pattern of recurring issues, with most incidents being routine urban matters rather than building-specific concerns.

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Risk rating

How 887-889 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
84th percentile

Out of 1133 buildings in this neighborhood, 181 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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 age

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

Construction spend, owner's portfolio

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

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 82.5%
Moderate concern 12.0%
Severe concern 5.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

887-889 Union St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 887-889 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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