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521 37Th Ave

Outer Richmond, SF 94121 1507045 2 units · 2 fl · 1981

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 Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 521 37Th 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 1981
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors2
Year built1981
Total area2,672 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1507045
Ownership

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

Owner name
Do Family Trust
Mailing address
Tuong & Ha Do, Ttes 2122 Lake St San Francisco CA 94121
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 2-unit residential building at 521 37th Avenue in San Francisco's Outer Richmond district is a 2-story flats and duplex structure built in 1981, currently owned by the Do Family Trust. The building's permit history is minimal, with only one permit application on record from 1982 that was ultimately cancelled. The property's recent history has been marked by several parking-related incidents, particularly in the summer of 2023, with multiple reports of vehicles parking on the sidewalk. Two specific incidents in August 2023 involved a BMW 330i (license plate 8ZHY685), with citations being issued in both cases. A third parking-related service request was recorded in July 2023, though the details were not specified. Looking further back, there was one abandoned vehicle report from September 2008 involving a yellow Mercury, which was resolved when the vehicle was found to be "gone on arrival." While the parking-related incidents represent the majority of recorded issues in recent years, it's worth noting that the building itself appears to have maintained a relatively stable history with no major structural or safety concerns on record.

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

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Risk rating

How 521 37Th 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
72th percentile

Out of 1040 buildings in this neighborhood, 291 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
88%
No DBI
violation
12%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 83.0%
Moderate concern 11.8%
Severe concern 5.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

521 37Th Ave apartment reviews

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The story over time

521 37Th Ave event timeline

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

2026
DBI Complaint Jun 15
Broken door to unit, an extension cord running from unit on the 3rd floor all the way to the garage. unit # 521 and 521 a are under one pg&e meter. the doorbell doesn¿t always work. the heater does not work.
Housing Inspection Services
DBI ComplaintApr 23
Date last observed: 22-apr-26; time last observed: 4/22/26; unit: 523; exact location: main bldg; building type: residence/dwelling no heat; hazardous outlet wiring; insects/rodents; no power to an outlet; ; additional information: please note that the actual location of the problems is apartment 523 (top floor apartment). the ll has been notified of the pest issue for over a year and is aware that the unit does not have power. ;

See all 5 events

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

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Every record we have

Full data for 521 37Th 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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