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1831-1833 Union St

Cow Hollow, SF 94123 0543031 3 units · 2 fl · 1900

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 Cow Hollow
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.

Rent & eviction protection

Is 1831-1833 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
3 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.

Building characteristics
Units3
Floors2
Year built1900
Total area4,425 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0543031
Ownership

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

Owner name
Iiba Investment Group Llc
Mailing address
3133 Irving St San Francisco CA 94122
Last sale
032218

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.

1831 Union St, San Francisco, CA 94123
1833 Union St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The two-story mixed-use building at 1831-1833 Union Street in Cow Hollow, owned by Iiba Investment Group LLC, was constructed in 1900 and contains three residential units plus a ground-floor retail space. The property has undergone significant renovations in recent years, with major remodeling work completed in 2016-2017 across multiple units, including comprehensive kitchen and bathroom updates in Units B and A ($45,000 each), extensive renovations in Unit C ($80,000), and electrical improvements including new lighting, switches, and circuits. Several furnace replacements were also completed between 2016-2017, although one related permit expired. The building experienced a series of violations in 2012 related to safety and maintenance issues, including problems with handrails, fire extinguishers, an intercom system, and lead paint hazards, though all these issues were abated by September 2013. Commercial improvements in 2016 included new signage and awning installations for the retail space.

The property's recent history shows active management and significant investment in both residential and commercial spaces, with approximately $200,000 spent on unit renovations and related improvements between 2016-2017 alone. Two tenant buyouts were recorded in 2016, totaling $85,500, suggesting recent tenant turnover, though this does not appear to correlate with any specific building issues. The building's location has required several street space permits for parking meter installation, indicating ongoing commercial activity at the site. All known building violations have been resolved, and no recent complaints have been filed regarding building conditions, though one furnace replacement permit remains in expired status.

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

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Risk rating

How 1831-1833 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
34th percentile

Out of 861 buildings in this neighborhood, 568 are predicted to be safer.

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

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

Building age

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

Neighborhood (ZIP code)

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

12-Month severity forecast
No violation 54.4%
Moderate concern 29.7%
Severe concern 15.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

1831-1833 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 1831-1833 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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