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1521 Treat Ave

Bernal Heights, SF 94110 5525034 2 units · 2 fl · 1906

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

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

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

Rent & eviction protection

Is 1521 Treat Ave 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 1906
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units2
Floors2
Year built1906
Total area2,400 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5525034
Ownership

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

Owner name
Wings Mary
Mailing address
1521 Treat Ave San Francisco CA 94110
Last sale
052797

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 1521 Treat Ave in Bernal Heights, owned by Mary Wings, was constructed in 1906 as a two-story flats and duplex structure. The building's maintenance history includes several significant plumbing issues, with three documented sewage backup incidents in 2021-2022 affecting 4-inch sewer vents or catch basins, one of which occurred most recently in March 2022. A plumbing complaint regarding a clogged kitchen sink and slow-draining bathroom sink was filed in November 2012 and resolved by March 2013. In 2011, the property underwent repairs to the house trap, and in 1999, structural work was completed to address an out-of-plumb 6x6 post.

The building has experienced some concerning incidents over the years, including an illegal basement unit complaint filed in August 2004 and multiple sewer-related issues, most recently documented in 2022. The property has also been subject to various parking and abandoned vehicle complaints in the vicinity, with three such incidents recorded in 2023 alone, though these are not directly related to the building's condition. An unspecified water-related fire incident was recorded, though no civilian injuries were reported. The building's permit and violation history suggests a pattern of plumbing-related challenges, though most historical issues have been addressed through proper channels.

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

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Risk rating

How 1521 Treat Ave'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
90th percentile

Out of 1276 buildings in this neighborhood, 128 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
86%
No DBI
violation
14%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Building age

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

12-Month severity forecast
No violation 80.1%
Moderate concern 12.7%
Severe concern 7.2%
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

1521 Treat Ave event timeline

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

2023
311 Request Oct 31
Abandoned vehicles
DPT Abandoned Vehicles Low
311 RequestSep 24
Abandoned vehicles

See all 2 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1521 Treat Ave 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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