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1011 Union St

Russian Hill, SF 94133 0121002 6 units · 2 fl · 1949

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Russian Hill — not a forecast
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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 1011 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 1949
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.

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 1949
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
Floors2
Year built1949
Total area3,156 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0121002
Ownership

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

Mailing address
Mark L & Genevieve H Caro T 11517 Silver Spring Ct Cupertino CA 95014
Last sale
July 13, 1993

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, 2-story multi-family residential building at 1011 Union Street in Russian Hill, owned by Mark & Genevieve Caro, has several significant outstanding safety compliance issues that affect resident safety and building integrity. Most notably, the property is currently classified as "Non-Compliant" under the Tier 3 Soft-Story Seismic Retrofit program, with active violations issued in April 2020 for failure to complete mandatory seismic retrofitting work. While permits indicate some progress was made towards compliance with soft-story requirements in 2017 and 2021 (with associated costs of $40,000), the retrofit work and final inspections remain incomplete, leading to additional fines for non-compliance with the Monthly Monitoring Fee requirements.

Recent safety improvements include the installation of a new fire alarm system in October 2023, which involved adding low-frequency sounders and manual pull stations to improve life safety systems at a cost of $12,500. The building has experienced multiple mechanical system upgrades, including water heater replacements in 2022 and 2024, and heating system upgrades in 2012 affecting multiple units. The property was previously identified in 2018 for potential ADU conversion work, though these permits were ultimately cancelled. Routine housing inspections were conducted in 2005 and 2008, with various concerns noted regarding smoke detectors and emergency exits, though these issues were marked as resolved. The building's infrastructure maintenance history includes multiple roof repairs in the early 1990s and deck waterproofing work. Recent neighborhood concerns recorded through 311 calls have primarily focused on street and sidewalk maintenance issues outside the building rather than internal building conditions.

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

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Risk rating

How 1011 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
29thpercentile

Out of 1133 buildings in this neighborhood, 804 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
56%
No DBI
violation
44%
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.

DBI tenant complaints (past 7 years)

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

Director's hearings (past 7 years)

Director's hearings are escalated enforcement actions for buildings that haven't resolved violations — a serious signal.

12-Month risk forecast
Moderate failure risk 44%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1011 Union St apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

1011 Union St event timeline

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

2025
311 Request Oct 18
Garbage and debris
other loose garbage debris yard waste
311 RequestSep 14
Garbage and debris

See all 12 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1011 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 1011 Union St compares to the neighborhood

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