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1772-1776 Union St

Cow Hollow, SF 94123 0529011 3 units · 3 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
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 1772-1776 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
Floors3
Year built1900
Total area4,980 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0529011
Ownership

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

Owner name
Chew/Chen Fmly Tr
Mailing address
Chen Gene T & Chew Donna Tr Po Box 320158 San Francisco CA 94132
Last sale
000000

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.

1776 Union St, San Francisco, CA 94123
1772 Union St, San Francisco, CA 94123
Augrented Insights
AI summary

The property at 1772-1776 Union Street is a three-story, multi-family residential building constructed in 1900, containing three units and owned by the Chew/Chen Family Trust. The building has undergone several significant renovations and maintenance work over the past few years, with the most recent being the repair of dry rot on rear stairs in early 2023 ($1,800), the installation of new furnaces and air conditioning units in March 2023, and extensive plumbing upgrades in late 2022 including new water heaters, supply lines, and waste pipes for all units. In 2021, a substantial renovation ($100,000) was completed involving kitchen and bathroom remodels in all units, including electrical upgrades and gas furnace replacement.

The building has faced multiple building complaints and compliance issues in recent years, with particular concern in 2023 regarding unauthorized construction and a potentially illegal rear extension measuring 8 feet. Complaints were filed in June 2023 about unpermitted work related to a cooling system installation on the roof, and in 2019 regarding unauthorized plumbing work. Historical records show consistent attention to maintenance issues, including dry rot repairs on rear stairs as far back as 1990. The property has also experienced periodic infrastructure improvements, such as a roof replacement (permit filed in 2004), though this permit ultimately expired. Recent street-level activity around the property has generated typical urban service requests, including reports of sidewalk cleanliness issues and damaged parking meters, though these are generally unrelated to the building's condition or management.

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Risk rating

How 1772-1776 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
7th percentile

Out of 861 buildings in this neighborhood, 801 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
43%
No DBI
violation
57%
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.

Building age

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

DBI complaints, owner's portfolio

Complaints across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 43.2%
Moderate concern 42.5%
Severe concern 14.3%
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

1772-1776 Union St event timeline

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

2026
Plumbing Permit May 08
To correct the address of issued permit #pmw20260424405: work category: 1m; replace existing forced air furnace with new. also this is for physical inspection report #cc-8727
Complete
Plumbing PermitApr 24
Work category: 1m; replace existing forced air furnace with new.

See all 20 events

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

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Every record we have

Full data for 1772-1776 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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