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555-557 42Nd Ave

Outer Richmond, SF 94121 1502005D 2 units · 2 fl · 1947

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 555-557 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 1947
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 built1947
Total area2,100 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1502005D
Ownership

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

Owner name
Christine S K Wu 2012 Fmly
Mailing address
Wu Christine S K Trustee 1778 36Th Ave San Francisco CA 94122
Last sale
042817

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.

557 42nd Ave, San Francisco, CA 94121
555 42nd Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 555-557 42nd Avenue in the Outer Richmond is a two-unit, two-story multi-family residential building constructed in 1947 and currently owned by Christine S K Wu 2012 Fmly. The building has undergone several significant improvements over the past two decades, including a complete reroofing in 2018 (cost: $8,100) and window replacements in 2021 (cost: $850). A notable renovation took place in 2003-2004 when an exercise room and bathroom were added to the garage floor, accompanied by extensive electrical work for lighting, switches, outlets, and fans. However, this period also experienced some compliance issues, with complaints in 2004 regarding unpermitted bathroom installations and furnace relocation, though one complaint was abated by July 2004 and the status of the other remains active.

More recent history of the building shows recurring issues with sidewalk parking violations, particularly between 2019-2022, with multiple citations issued to address this problem. The only infrastructure concern in recent years was a sidewalk defect reported in 2016 involving approximately 150 square feet of damaged/uneven pavement that was documented and resolved by the Department of Public Works. The building's permit and complaint history suggests active property management with regular maintenance and improvements, though with some historical compliance challenges that appear to have been mostly addressed.

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

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Risk rating

How 555-557 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
38th percentile

Out of 1040 buildings in this neighborhood, 645 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
82%
No DBI
violation
18%
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.

Estimated permit spend (past 7 years)

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 78.0%
Moderate concern 16.0%
Severe concern 6.0%
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

555-557 42Nd Ave event timeline

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

2021
Building Permit Mar 17
Replacement of 2 front windows
$850 · Issued

See all 1 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 555-557 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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