Free SF apartment background check

1059 Union St

Russian Hill, SF 94133 0121032 16 units · 3 fl · 1986

This building has significantly more problems than most nearby buildings. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Russian Hill
At or below average
avg 1.9
1
FewerMore

This building has 1 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 1059 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 1986
2 or more units
16 units
Property type
Multi-Family Residential
Zoning
RM2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units16
Floors3
Year built1986
Total area18,036 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0121032
Ownership

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

Owner name
Trinity G2 Holding Llc
Mailing address
1145 Market St Fl 12 San Francisco CA 94103
Last sale
110217

Landlord portfolio

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

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Augrented Insights
Initial analysis

1059 Union Street is a 16-unit, 3-story multi-family residential building constructed in 1986, currently owned by Trinity G2 Holding LLC. The building's recent history has been marked by several boiler-related issues, with the most current situation being a fire alarm verification of decibel levels in sleeping rooms initiated in March 2024, and a sleeping area requirement violation issued in December 2023 that remains open. The boiler, specifically serial number 942F04-03740, has generated multiple compliance concerns, including a December 2023 complaint regarding an expired operating permit that was abated in January 2024, and a March 2023 complaint about a single wall heat exchanger. The building underwent significant maintenance in 2017 with a $120,000 reroofing project, and has had routine inspections dating back to 1997, revealing periodic issues that have typically been resolved promptly.

The property's permit history shows regular maintenance and compliance efforts, including the recent decommissioning of the boiler in December 2023 and various street space permits in 2017. A notable historical milestone was the 1977 completion of the 16-unit apartment construction, following an earlier 1983 demolition. The building has experienced some tenant-reported issues in recent years, including concerns about garbage and debris (2025), toters being left out (2023), and various maintenance matters. Fire safety has been a recurring focus, with multiple fire inspections noting issues such as the need for appropriate fire extinguishers and smoke detector concerns, though these violations were typically addressed within a reasonable timeframe. The building's management generally responds to violations and permits promptly, as evidenced by the resolution of most recent complaints within a few months.

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

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Risk rating

How 1059 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
13th percentile

Out of 1133 buildings in this neighborhood, 986 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
25%
No DBI
violation
75%
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 size

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

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 31.2%
Moderate concern 64.7%
Severe concern 4.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1059 Union St apartment reviews

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The story over time

1059 Union St event timeline

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

2026
311 Request May 30
Other excessive noise
Noise

See all 6 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1059 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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