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523 19Th Ave

Central Richmond, SF 94121 1562005 2 units · 2 fl · 1907

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 Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 523 19Th 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 1907
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 built1907
Total area1,760 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1562005
Ownership

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

Owner name
Mary Tham Trust
Mailing address
Tham Mary Trustee 523 19Th Ave 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 two-unit residential building at 523 19th Avenue in San Francisco's Central Richmond district is a two-story flats and duplex structure built in 1907, currently owned by the Mary Tham Trust. The property's documented history shows relatively few significant issues over the past decade, with the most recent construction-related activity being a minor street space permit issued in November 2011 for a nominal cost of $1.00. The building has experienced recurring parking-related concerns, particularly between 2019 and 2020, with four documented incidents involving blocked driveways and sidewalk parking. Three of these incidents involved vehicle enforcement requests where officers were unable to locate the offending vehicles, while one case involving a gold Toyota Camry resulted in a tow citation. Earlier records from 2014 noted a complaint about sidewalk blockage from privately maintained vegetation, though city officials reported that the condition could not be verified upon inspection, and a 2016 incident involving illegal postings was promptly addressed by the Department of Public Works.

The parking-related issues seem to be the most frequent type of complaint associated with this address, though three out of four reported incidents resulted in no enforcement action due to the vehicles being undetectable at the time of inspection. The building's documented history shows no major safety violations or building code infractions, and the limited number of complaints over a period of approximately nine years suggests relatively stable building conditions. The most recent documented issues occurred more than three years ago (2020), with no subsequent complaints or documented incidents in the available records up to October 2023.

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

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Risk rating

How 523 19Th 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
55th percentile

Out of 2250 buildings in this neighborhood, 1012 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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 age

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

Neighborhood location

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 75.9%
Moderate concern 20.0%
Severe concern 4.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

523 19Th Ave apartment reviews

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The story over time

523 19Th Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 523 19Th 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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