Free SF apartment background check

570 Union St

Telegraph Hill, SF 94133 0103013 17 units · 3 fl · 1965

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Telegraph Hill
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Telegraph Hill average of 1.2.

Rent & eviction protection

Is 570 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 1965
2 or more units
17 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units17
Floors3
Year built1965
Total area16,246 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0103013
Ownership

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

Owner name
Rosano Properties Llc
Mailing address
430 Bay Shore Blvd San Francisco CA 94124
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

570 Union Street is a 3-story, 17-unit multi-family residential building constructed in 1965, currently owned by Rosano Properties LLC. The property has undergone several significant improvements in recent years, including an ongoing window and door replacement project (initiated September 2024) costing $147,000, and a voluntary fire alarm system upgrade completed in September 2023. The building has experienced recurring fire safety system-related issues, with multiple violations and complaints regarding alarm systems, sprinkler systems, and sleeping area requirements between 2014 and 2024. Most recently, in July 2024, a violation was issued regarding the alarm system maintenance, while an open violation from November 2023 pertains to sleeping area requirements. Historical fire safety concerns were addressed promptly, with past violations for blocked exits (2017), and various system-related issues being corrected or found as having no merit.

The building's maintenance history shows attention to basic infrastructure, including a reroofing project recorded in 1992, though this permit has since expired. During its history, the property has undergone three routine housing inspections (2000, 2005, and 2007), with all issues being resolved. Recent 311 calls from 2024 primarily involve external matters such as sidewalk blockages, waste issues, and graffiti removal, rather than building-specific concerns. Two carbon monoxide incidents and three false alarm/fire call incidents were recorded by fire services, all resulting in no civilian injuries. The building's management has shown a pattern of addressing violations and complaints, with many issues being promptly corrected or resolved, though some recent violations related to fire safety systems remain open or were only recently abated.

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

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Risk rating

How 570 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
6th percentile

Out of 684 buildings in this neighborhood, 643 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
18%
No DBI
violation
82%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Neighborhood location

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

12-Month severity forecast
No violation 8.5%
Moderate concern 68.7%
Severe concern 22.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

570 Union St event timeline

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

2025
Electrical Permit Sep 15
New installation of manual fire alarm system to comply with 1103.7.6.1 ref pa 202502200685
Complete
Building PermitFeb 20
New installation of manuel fire alarm system to comply with 1103.7.6.1,fire alarm visual/audible notification provided as requested. manuel pull stations located near facp and near exits routes.fire alarm communicator for off-site monitoring. lf sounders, fire alarm sleeping area req. per1103.7.6.1

See all 14 events

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

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Every record we have

Full data for 570 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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