Free SF apartment background check

337 28Th Ave

Central Richmond, SF 94121 1405053 2 units · 3 fl · 1900

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 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 337 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 1900
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
Floors3
Year built1900
Total area5,046 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1405053
Ownership

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

Owner name
Lei Crystal
Mailing address
337 28th Ave San Francisco CA 94121
Last sale
032913

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story, two-unit multi-family residential building at 337 28th Avenue in the Central Richmond neighborhood, owned by Lei Crystal, has a complex and notable history since its construction in 1900. Most significantly, during 2003-2010, the property underwent substantial renovation work following complaints of unpermitted construction, with violations filed in September 2003 regarding unauthorized work, including foundation and structural modifications, as well as unauthorized vertical and horizontal additions. These issues were ultimately addressed through the legalization process in 2006-2008, which included substantial improvements such as foundation replacement, new electrical systems, and fire safety upgrades including sprinkler system installation, at a cost of $400,000. Subsequent inspections in 2013 and 2012 raised concerns about possible illegal units, unauthorized modifications, and various habitability issues, including electrical hazards, blocked exits, and pest infestations.

The building has experienced recurring infrastructure challenges, with multiple plumbing issues documented between 2011-2015, including sewage backups. Recent complaints from August 2023 reference concerns about unrecorded property line windows and mechanical ventilation affecting neighboring properties. While many historical violations have been resolved, including a 2013 fire safety issue regarding blocked exits, and a 2012 complaint about multiple unauthorized units was abated, the property's history suggests ongoing concerns about code compliance and proper permitting procedures. The building's systems have been significantly upgraded over the years, as evidenced by multiple completed permits for electrical, plumbing, and fire safety improvements, though several earlier permits from 2004-2005 remain in "Expired" status. A 2008 complaint regarding the building's structural appearance was resolved by 2010, and various historical complaints about unauthorized construction have been officially abated.

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

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Risk rating

How 337 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
35th percentile

Out of 2250 buildings in this neighborhood, 1462 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
81%
No DBI
violation
19%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

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 57.4%
Moderate concern 32.9%
Severe concern 9.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

337 28Th Ave apartment reviews

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The story over time

337 28Th Ave event timeline

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

2023
DBI Complaint Aug 22
Date last observed: 18-aug-23; time last observed: last friday 5pm; identity of person performing the work: 337; floor: all 3 floo; exact location: main bldg; building type: residence/dwelling other building; other plumbing; ; additional information: unrecorded property line windows and mechanically ventilation at property line from next door apartment building on all 3 levels.;
Building Inspection Division

See all 1 events

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

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Every record we have

Full data for 337 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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