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1814-1816 Union St

Cow Hollow, SF 94123 0530009 3 units · 2 fl · 1900

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Cow Hollow
Above average
avg 0.7
1
FewerMore

This building has 1 novs (7y), above the Cow Hollow average of 0.7.

Rent & eviction protection

Is 1814-1816 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 area4,060 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0530009
Ownership

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

Owner name
Yiu-Chu Janne L
Mailing address
Janne Edward 10 22Nd Ave San Francisco CA 94121
Last sale
030195

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.

1816 Union St, San Francisco, CA 94123
1814 Union St, San Francisco, CA 94123
Augrented Insights
AI summary

The property at 1814-1816 Union Street is a two-story, three-unit multi-family residential building with a commercial space, constructed in 1900 in the Cow Hollow neighborhood. The building has undergone several significant renovations and repairs over the past few decades, with the most recent work occurring in 2024, including shower, toilet, and vanity repairs, as well as electrical panel and kitchen rewiring updates. In 2016-2017, substantial improvements were made to the retail space, including ADA compliance upgrades, electrical work, and bathroom renovations.

The building has a history of maintenance issues and violations, particularly notable between 2012-2013 when multiple building violations were documented regarding heat sources, windows, electrical systems, floors, painting, and plumbing. There were also some fire code violations issued in 2018. The commercial space has experienced multiple periods of vacancy and associated complaints between 2018-2022, including concerns about unauthorized use of exterior spaces. Historical maintenance records show attention to critical infrastructure, including roofing work in 1992, 1997, and 2016, as well as repairs to stairways and decks. Recent complaints in 2024 primarily concern street-level issues such as garbage and sidewalk maintenance, though these are external to the building itself. The property has undergone various system upgrades over the years, including plumbing and electrical improvements, with most recent work focusing on modernizing these systems to current standards.

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Risk rating

How 1814-1816 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
5th percentile

Out of 861 buildings in this neighborhood, 818 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
38%
No DBI
violation
62%
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.

DBI tenant complaints (past 7 years)

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

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.

12-Month severity forecast
No violation 21.9%
Moderate concern 69.3%
Severe concern 8.8%
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

1814-1816 Union St event timeline

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

2026
311 Request May 26
Garbage and debris
other bagged boxed contained garbage

See all 9 events

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

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Every record we have

Full data for 1814-1816 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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