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622 40Th Ave

Outer Richmond, SF 94121 1582040 4 units · 2 fl · 1959

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 Richmond
Above average
avg 0.7
1
FewerMore

This building has 1 novs (7y), above the Outer Richmond average of 0.7.

Rent & eviction protection

Is 622 40Th 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 1959
2 or more units
4 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
Units4
Floors2
Year built1959
Total area3,372 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1582040
Ownership

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

Owner name
Yu Family Tr
Mailing address
Yu Li Ping & Yu Sam Kwok Wa 1418 26Th Ave San Francisco CA 94122
Last sale
022795

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story, four-unit multi-family residential building at 622 40th Ave in the Outer Richmond, owned by Yu Family Tr, has experienced several significant events and maintenance issues since its construction in 1959. Most notably, the building suffered a fire in March 2023 that caused structural damage to the south property line wall and roof, along with water damage in the stairwell; this incident triggered emergency response inspections and subsequent repairs that were completed in August 2024, including structural reinforcement and restoration of affected areas. The building has undergone recent substantial electrical upgrades, with work completed in July 2023 to upgrade electrical sub-panels and main disconnects for all four units, as well as ground system repairs to meet PG&E requirements, indicating ongoing infrastructure improvements.

Historical maintenance records show various repairs and upgrades over the years, including stucco repair in 2009, roof replacement in 2002, and vinyl siding installation in 1988. The building's safety systems have been addressed through multiple violations and corrections, including requirements for smoke enclosure door closers, handrails, directional signs, and electrical safety improvements, all of which were ultimately resolved. Recent 311 calls regarding the property primarily relate to external issues such as parking enforcement, tree maintenance, and street cleaning, rather than building-specific problems. The property's documented history reflects a pattern of responsive maintenance and regulatory compliance, particularly in addressing the aftermath of the 2023 fire incident.

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

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Risk rating

How 622 40Th 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
21th percentile

Out of 1040 buildings in this neighborhood, 822 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
70%
No DBI
violation
30%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

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.

12-Month severity forecast
No violation 64.8%
Moderate concern 24.8%
Severe concern 10.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

622 40Th Ave apartment reviews

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The story over time

622 40Th Ave event timeline

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

2025
311 Request Nov 16
Blocking driveway cite only
Parking Enforcement

See all 6 events

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

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Every record we have

Full data for 622 40Th 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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