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4055 California St

Inner Richmond, SF 94118 1362049 3 units · 3 fl · 1988

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 Inner Richmond
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Inner Richmond average of 0.9.

Rent & eviction protection

Is 4055 California St 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 1988
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RM1
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units3
Floors3
Year built1988
Total area4,890 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1362049
Ownership

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

Owner name
Pon Tom L & Gina S
Mailing address
330 N Willard St San Francisco CA 94118
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit multi-family residential building at 4055 California Street in the Inner Richmond was constructed in 1988, with the current owners Pon Tom L & Gina S having maintained the property through various improvements and necessary repairs. The building has undergone several significant maintenance activities, including the replacement of two sliding glass doors in 2019 (Unit #3), reroofing in 2009, and importantly, fire damage repairs in 2007 that affected Units 1 and 2, requiring substantial drywall replacement, electrical checks, and kitchen sink replacement. The building has experienced periodic maintenance issues that have required attention, including a water damage incident in Unit #2's bedrooms in 2008, which was resolved within two months.

Of particular note, the building underwent a routine safety inspection in 2016, and a significant cluster of fire safety violations was recorded in 2003, including issues with fire escape drop ladders, fire extinguisher maintenance, smoke detectors, and emergency exit lights, though all these violations were promptly addressed by May 19, 2003. The property has experienced some plumbing challenges, as evidenced by a sewage backup incident in 2014, which was resolved promptly. Recent external issues include graffiti incidents, with the most recent being reported in June 2023, though this was affected by the COVID-19 pandemic's enforcement restrictions. The building's maintenance record shows regular upkeep, though historical records from 2003 demonstrate a period requiring increased attention to fire safety systems, which have been addressed and resolved.

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

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Risk rating

How 4055 California St'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
83th percentile

Out of 1723 buildings in this neighborhood, 293 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

Estimated permit spend (past 7 years)

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

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 84.4%
Moderate concern 11.1%
Severe concern 4.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

4055 California St event timeline

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

2025
DBI Complaint Mar 03
Date last observed: 01-mar-25; time last observed: 3pm; identity of person performing the work: building owner, mr li scaffold; exact location: main bldg; building type: residence/dwelling work beyond scope of permit; work being done in dangerous manner; other building; ; additional information: dumping paint & concrete tainted water on city tree & storm drain. have pictures proving this ;
Building Inspection Division

See all 1 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4055 California St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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