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570 Union St

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

Nothing on record for this building in the last seven years, but our model still flags a rising risk of maintenance problems in the next 12 months. That forecast comes from the owner's wider portfolio and the surrounding area, not from this building's own record — treat it as a reason to ask questions, not as evidence of a problem. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Telegraph Hill — not a forecast
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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

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.

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 1965
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
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).

Mailing address
430 Bay Shore Blvd San Francisco CA 94124
Last sale

Landlord portfolio

Other SF properties this owner holds, with a risk rating 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

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
6thpercentile

Out of 684 buildings in this neighborhood, 643 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
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 risk forecast
High failure risk 82%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

570 Union St apartment reviews

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On the map

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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.

Side by side

How 570 Union St compares to the neighborhood

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

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