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1129 Union St

Russian Hill, SF 94109 0122027C 6 units · 3 fl · 1918

This building has a substantial enforcement record over the last seven years, and our model predicts continuing maintenance failures over the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Russian Hill — not a forecast
Above average
avg 1.9
19
FewerMore

This building has 19 novs (7y), above the Russian Hill average of 1.9.

Rent & eviction protection

Is 1129 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 1918
2 or more units
6 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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1918
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units6
Floors3
Year built1918
Total area7,380 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0122027C
Ownership

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

Mailing address
1129 Union St San Francisco CA 94109
Last sale

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 6-unit, 3-story multi-family residential building at 1129 Union Street in Russian Hill, owned by Huie Crystal K & Sharon Cho, has undergone several significant improvements and faced multiple maintenance challenges since its construction in 1918. Most notably, the building completed mandatory seismic retrofitting in 2019 as a Tier 3 soft-story building, demonstrating compliance with San Francisco's earthquake safety requirements. Recent housing concerns include persistent issues with chipping paint and lead paint concerns, with multiple complaints filed in 2023-2024, and a current active complaint from June 2023 regarding incomplete lobby work following the seismic retrofit. The building has experienced recurring maintenance issues, including a serious cluster of violations in mid-2015 that required repairs to various interior surfaces, plumbing systems, and electrical systems, though these were all abated by February 2016.

The property has seen consistent infrastructure upgrades over the past decade, including furnace replacements, gas service upgrades for multiple units, and various plumbing improvements including the installation of a new water heater for all units in 2014. Recent permits from 2023 indicate ongoing maintenance attention, including water damage repairs to the lobby ceiling. The building has encountered several tenant complaints regarding maintenance issues, including problems with flooring, plumbing, and appliances, though most historical violations have been resolved. The property has maintained its compliance with building codes, as evidenced by the completion of the soft-story retrofit program, though recent housing inspection requests indicate persistent maintenance issues requiring ongoing attention.

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

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Risk rating

How 1129 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
16thpercentile

Out of 1133 buildings in this neighborhood, 952 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
32%
No DBI
violation
68%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Notices of Violation (past 7 years)

DBI issued Notices of Violation at this address over the last 7 years — a direct record of code enforcement activity.

12-Month risk forecast
High failure risk 68%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1129 Union St apartment reviews

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On the map

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The story over time

1129 Union St event timeline

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

2024
311 Request Aug 09
Garbage and debris
human waste or urine
Building Violation (NOV)Jun 25
Building violation

See all 17 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1129 Union St apartments

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

Side by side

How 1129 Union St compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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