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1317-1319 42Nd Ave

Outer Sunset, SF 94122 1797040 2 units · 2 fl · 1984

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 Sunset
At or below average
avg 1.8
0
FewerMore

This building has 0 novs (7y), at or below the Outer Sunset average of 1.8.

Rent & eviction protection

Is 1317-1319 42Nd 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 1984
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 built1984
Total area3,644 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1797040
Ownership

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

Owner name
Lam Mary Yuet Ching Ng
Mailing address
1319 42nd Ave San Francisco CA 94122
Last sale
032919

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

1317 42nd Ave, San Francisco, CA 94122
1319 42nd Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The property at 1317-1319 42nd Avenue in San Francisco's Outer Sunset neighborhood is a two-unit, two-story multi-family residential building known as Flats & Duplex, constructed in 1984 and currently owned by Mary Yuet Ching Ng Lam. The building's construction history is relatively straightforward, with three building permits on record between 1981-1983. The earliest permit, number 8104420 from May 1981, was cancelled prior to completion, while two subsequent permits processed in late 1983 (permits 8312693 and 8300800) marked the official creation and erection of the structure, with the latter being completed successfully.

The only recent incident associated with this address occurred on July 29, 2024, involving a parking enforcement request to the MTA regarding an illegal parking situation. However, this complaint could not be validated by responding officers under CAD #242111995, resulting in a closed case with no enforcement action taken. This incident represents the sole recorded external incident for the property in recent years, and the nature of the complaint suggests it was not directly related to the building's condition or resident experience. The building's historical documentation shows normal construction progression for a two-unit residential structure in the early 1980s, with no subsequent permits or violations of note in the available records.

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

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Risk rating

How 1317-1319 42Nd 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
88th percentile

Out of 632 buildings in this neighborhood, 76 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

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 72.1%
Moderate concern 13.4%
Severe concern 14.6%
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

1317-1319 42Nd 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 1317-1319 42Nd 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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