Free SF apartment background check

1581-1587 Union St

Cow Hollow, SF 94123 0546013D 4 units · 2 fl · 1922

This building has a substantial enforcement record over the last seven years, and our model predicts continuing maintenance failures over the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Cow Hollow — not a forecast
Above average
avg 0.7
13
FewerMore

This building has 13 novs (7y), above the Cow Hollow average of 0.7.

Augrented Insights
Initial analysis

The two-story, four-unit building at 1581-1587 Union Street in Cow Hollow, owned by the David Hd Wong Survivors Trust, has experienced significant maintenance and quality of life issues in recent years. Built in 1922, the property has an active violation as of December 2022 regarding heating system inadequacies, with reported unit temperatures as low as 59.4 degrees. Earlier violations from November 2022 documented water damage affecting walls and ceilings, problems with hot water supply, and a malfunctioning doorbell. The building has also been subject to multiple service requests and complaints, with the most serious concerns emerging in 2024 during construction activities at the neighboring 1585 Union Street unit, where residents reported persistent noise disturbances and music at all hours over several months. This followed a 2023 complaint about rodent infestation in 1585 Union Street. Additional persistent issues documented in late 2022 included problems with windows, insulation, mold, and various structural concerns in unit 1587.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Rent & eviction protection

Is 1581-1587 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 1922
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH3
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 1922
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 built1922
Total area4,056 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0546013D
Ownership

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

Mailing address
Wong David Hing Doo Ttee 15 Gerke Aly Apt 3 San Francisco CA 94133
Last sale

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

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

1583 Union St, San Francisco, CA 94123
1587 Union St, San Francisco, CA 94123
1585 Union St, San Francisco, CA 94123
1581 Union St, San Francisco, CA 94123
Risk rating

How 1581-1587 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
1stpercentile

Out of 861 buildings in this neighborhood, 852 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
24%
No DBI
violation
76%
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.

DBI tenant complaints (past 7 years)

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

Director's hearing rate, owner's portfolio

Per-building rate of director's hearings across the owner's portfolio.

12-Month risk forecast
High failure risk 76%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1581-1587 Union St apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

The story over time

1581-1587 Union St event timeline

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

2026
Building Permit Sep 10
Unit#1585: add new stacking washer & dryer in bathroom. revise closet laundry alcove.
$7,500 · Filed
311 RequestSep 05
Offensive

See all 23 events

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

Unlock complete timeline
Every record we have

Full data for 1581-1587 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 1581-1587 Union St compares to the neighborhood

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

Loading comparables…
Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Pay once

Report Bundle

For the buildings you're deciding on right now

$10one time

3premium reports

$3.33 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 3 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them
Pay once

Apartment Hunter

For a wide search across many buildings

$39one time

30premium reports

$1.30 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 30 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them

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

Watch 1581-1587 Union St
Get alerted the moment a new violation or complaint is filed.