Free SF apartment background check

1401 41St Ave

Outer Sunset, SF 94122 1812001 2 units · 2 fl · 1945

This building has more problems than most buildings in this neighborhood. 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 1401 41St 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 1945
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 built1945
Total area2,279 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1812001
Ownership

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

Owner name
Lai King Ping & Li Suchang
Mailing address
300 Dwight St San Francisco CA 94122
Last sale
081914

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 1401 41st Avenue in San Francisco's Outer Sunset neighborhood is a two-unit, two-story multi-family residential building constructed in 1945, currently owned by Lai King Ping & Li Suchang. The building has undergone several significant renovations and faced multiple compliance challenges over the past decade and beyond. Most recently, in late 2023, there were serious safety concerns regarding back stairwell repairs, with complaints about dangerous work practices and inadequate safety features, though a permit for stair repair was subsequently completed in November 2023. The building has a documented history of unauthorized unit modifications and occupancy concerns, with multiple complaints suggesting possibly illegal unit conversions and excessive occupancy, including a 2025 complaint about an illegal basement unit with code violations. Between 2012-2013, the property underwent substantial legitimate renovations including kitchen legalizations, bathroom additions, and major system replacements (furnaces and water heaters) totaling approximately $63,000 in permitted work.

The property has been subject to various inspections and investigations regarding potential illegal activities, including unauthorized short-term rentals in 2018, with listings found on multiple vacation rental platforms, and persistent concerns about illegal unit modifications. There were also health-related complaints in 2018 regarding mold and odors. The exterior of the property has generated numerous sanitation service requests between 2023-2025, primarily involving abandoned furniture, debris, and other waste, though these were typically resolved promptly. Historic improvements to the property include a completed horizontal addition from 1997, and various electrical and plumbing upgrades have been properly permitted, including comprehensive electrical work to support new appliances and fixtures installed during the 2012-2013 renovations. The building's documented history reveals a pattern of both legitimate improvements and concerning compliance issues, particularly regarding unit modifications and occupancy, though recent building permits indicate ongoing maintenance and repair activity by the current owners.

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

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Risk rating

How 1401 41St 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
22th percentile

Out of 632 buildings in this neighborhood, 493 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
55%
No DBI
violation
45%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Neighborhood location

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

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month severity forecast
No violation 62.6%
Moderate concern 30.3%
Severe concern 7.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1401 41St Ave apartment reviews

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The story over time

1401 41St Ave event timeline

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

2026
311 Request Jun 08
Municipal transportation agency
paint shop complaint

See all 10 events

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

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Every record we have

Full data for 1401 41St 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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