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2055 California St

Lower Pacific Heights, SF 94109 0650019 16 units · 4 fl · 1927

This building has more problems than most buildings in this neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Lower Pacific Heights
At or below average
avg 1.6
0
FewerMore

This building has 0 novs (7y), at or below the Lower Pacific Heights average of 1.6.

Rent & eviction protection

Is 2055 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 1927
2 or more units
16 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units16
Floors4
Year built1927
Total area14,034 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0650019
Ownership

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

Owner name
Howard & Yeiko Pat Mizuhara
Mailing address
Mizuhara Yeiko Pat Trustee 135 Stonehedge Rd Hillsborough CA 94010
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

2055 California Street is a 16-unit, 4-story multi-family residential building constructed in 1927 in the Lower Pacific Heights neighborhood, currently owned by Howard & Yeiko Pat Mizuhara. The building has experienced numerous maintenance and safety issues over the years, with the most recent violation as of December 2023 related to sleeping area requirements. Historical complaints from 2021-2023 have included problems with fire safety systems, such as blocked exits and fire extinguishers, though many violations from 2019-2021 were subsequently abated. The building's maintenance history shows periodic infrastructure improvements, including a main water line replacement in 2021, reroofing projects in 2008 and 1992, and window replacements in 1995.

Several significant resident concerns have been documented, including a tenant being stuck in an elevator for two hours in 2012, reports of mold and maintenance issues in 2005, and recent complaints about garbage and debris in common areas in 2017. The property has undergone multiple routine safety inspections over the years, revealing various fire safety concerns that required correction. More recent maintenance issues have included plumbing concerns, with a sewage backup incident reported in April 2022, and a missing side sewer vent cover reported in May 2022. A brief period of unauthorized short-term rental activity was recorded in 2021 but was resolved after contact from regulatory authorities. The building's history demonstrates an ongoing pattern of maintenance and safety-related issues, though many historical violations have been addressed and abated.

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

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Risk rating

How 2055 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
20th percentile

Out of 670 buildings in this neighborhood, 536 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
49%
No DBI
violation
51%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month severity forecast
No violation 28.1%
Moderate concern 42.3%
Severe concern 29.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

2055 California St event timeline

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

2026
Fire Complaint Apr 10
Alarm Systems
Fire ComplaintApr 10
Combustible Materials

See all 9 events

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

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Every record we have

Full data for 2055 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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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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