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1929-1931 Union St

Cow Hollow, SF 94123 0542036 4 units · 2 fl · 1900

Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Cow Hollow — not a forecast
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Cow Hollow average of 0.7.

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 1929-1931 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 1900
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
UNION
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 1900
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
Units4
Floors2
Year built1900
Total area3,895 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0542036
Ownership

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

Owner name
Mailing address
Renzas Wesley Lowell Jr Tru 151 Stanford Way Sausalito CA 94965
Last sale
June 30, 2014

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

1929 Union St, San Francisco, CA 94123
1931 Union St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The property at 1929-1931 Union Street is a two-story, four-unit multi-family residential building with commercial space, located in San Francisco's Cow Hollow neighborhood. Built in 1900 and currently owned by Wes Renzas Lvg Tr, the building has undergone several significant improvements over the past two decades. Most notably, in late 2013, comprehensive kitchen renovations were completed in both units, including updates to sinks, faucets, dishwashers, garbage disposals, and microwaves, with associated electrical and plumbing work totaling approximately $10,875. Earlier renovations in the early 2000s addressed various structural and maintenance issues, including window replacements, dry rot repairs, and roof work above the ground-level store, though some permits from this period are now expired.

The building's recent history includes a fire complaint regarding Shared Spaces from August 2021 that was deferred and closed in February 2023, and a malfunctioning smoke detector incident with no civilian injuries. The property has experienced several environmental maintenance issues in 2024, including reports of graffiti, blocked sidewalks, and garbage/debris on public areas, all of which have been resolved through appropriate channels. There is currently an open case from May 2024 regarding scooter-related services, and a tree maintenance issue reported in December 2024. The building's maintenance record shows consistent attention to basic upkeep and modernization, though the recent cluster of 311 calls in 2024 primarily relates to external, public space issues rather than building-specific problems.

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

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Risk rating

How 1929-1931 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
26thpercentile

Out of 861 buildings in this neighborhood, 637 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
62%
No DBI
violation
38%
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.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

Neighborhood (ZIP code)

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

12-Month risk forecast
Moderate failure risk 38%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1929-1931 Union St apartment reviews

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On the map

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The story over time

1929-1931 Union St event timeline

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

2021
Fire Complaint Aug 23
Shared Spaces
Deferred

See all 1 events

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

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Every record we have

Full data for 1929-1931 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 1929-1931 Union St compares to the neighborhood

This building against comparable properties in Cow Hollow. Toggle filters to narrow the peer group.

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

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