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622 28Th Ave

Central Richmond, SF 94121 1570017 5 units · 2 fl · 1951

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 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 622 28Th 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 1951
2 or more units
5 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
Units5
Floors2
Year built1951
Total area4,390 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1570017
Ownership

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

Owner name
Lau Joseph P & May M
Mailing address
622 28th Ave San Francisco CA 94121
Last sale
050609

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 5-unit, 2-story multi-family residential building at 622 28th Avenue in the Central Richmond neighborhood, owned by Joseph P & May M Lau, was constructed in 1951 and has undergone several significant improvements and faced various maintenance challenges over the years. Most notably, the building completed a mandatory soft-story retrofit in 2017 at a cost of $28,000, demonstrating compliance with seismic safety requirements. The building's maintenance history includes a reroofing project in 1996, external wall improvements in 1989, and a comprehensive compliance update in 1985.

The property has experienced recurring maintenance issues related to water damage and safety concerns, particularly in the 2007-2008 period when multiple complaints were filed regarding mold and mildew problems across different units. More recent complaints include plumbing system leaks in 2013, a malfunctioning back door in 2012 that affected emergency egress, and outdated bathroom fixtures. Several building violations were recorded in 2011, primarily related to fire safety concerns in the garage, including the need for fire sprinkler protection and repairs to the garage ceiling with fire-resistant materials. There have been multiple 311 calls regarding parking violations near the property, with the most recent occurring in 2024, though these are external issues not directly related to building conditions. The building underwent routine housing inspections in 2002 and 2011, and while several violations were identified, they were subsequently abated. The property's documented history suggests ongoing maintenance efforts by the owners, particularly regarding structural safety improvements, though some recurring issues related to water damage and fire safety systems have been noted over the years.

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

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Risk rating

How 622 28Th 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
25th percentile

Out of 2250 buildings in this neighborhood, 1688 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
76%
No DBI
violation
24%
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.

Estimated permit spend (past 7 years)

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

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 66.6%
Moderate concern 17.0%
Severe concern 16.3%
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

622 28Th 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 622 28Th 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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