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1743-1747 Union St

Cow Hollow, SF 94123 0544014 2 units · 2 fl · 1908

A handful of records on file over the last seven years, and our model puts this building at a low risk of further maintenance problems 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 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.

Rent & eviction protection

Is 1743-1747 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 1908
2 or more units
2 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 1908
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
Units2
Floors2
Year built1908
Total area1,450 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0544014
Ownership

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

Owner name
Mailing address
Alan Tse 191 San Felipe Ave San Francisco CA 94127
Last sale
January 27, 1994

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.

1747 Union St, San Francisco, CA 94123
1743 Union St, San Francisco, CA 94123
1745 Union St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The property at 1743-1747 Union Street is a two-story, multi-family residential building with a ground-floor storefront, built in 1908 and owned by Tse Living Trust. The building underwent significant improvements in late 2017, including a comprehensive kitchen and bathroom remodel with new fixtures, tiles, and electrical updates, with a total renovation cost of $15,000. The building has a documented history of maintaining its infrastructure, including a rooftop replacement (2000) and several window upgrades (1994), though an expired roofing permit from 2000 and a completed permit to remove unauthorized work from 2000 are noteworthy. The property has experienced two fire-related incidents in recent years (2022-2023), with violations issued for hazardous materials handling and general permit issues, though all violations were subsequently abated.

The surrounding area has experienced ongoing maintenance challenges, as evidenced by multiple 311 calls in 2024 regarding garbage and debris, street lighting issues, and pavement defects. Recent municipal service records show recurring street cleaning needs, with three cases of abandoned furniture and debris between July and October 2024. The building's immediate location has faced persistent urban maintenance issues, with multiple street cleaning operations required over the past two years, including the need for general cleaning in 2023-2024. While the building itself has generally complied with permit requirements following the 2017 renovations, the surrounding area continues to experience various infrastructure and maintenance challenges that may impact resident quality of life.

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

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Risk rating

How 1743-1747 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
56thpercentile

Out of 861 buildings in this neighborhood, 379 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
81%
No DBI
violation
19%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

12-Month risk forecast
Low failure risk 19%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1743-1747 Union St apartment reviews

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On the map

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The story over time

1743-1747 Union St event timeline

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

2026
DBI Complaint Jan 12
Date last observed: 11-jan-26; exact location: main bldg; building type: residence/dwelling ; additional information: this is a nail care shop. address numbers are not atleast 4 inches high and don’t have required stroke width in violation of the code ;
Code Enforcement Section
DBI ComplaintJan 12
Date last observed: 11-jan-26; exact location: main bldg; building type: residence/dwelling other building; ; additional information: this is a shoe repair shop. no address identification displayed ;

See all 4 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1743-1747 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 1743-1747 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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