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201 Onondaga Ave

Mission Terrace, SF 94112 6951001 6 units · 2 fl · 1963

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 Mission Terrace
Above average
avg 2.3
15
FewerMore

This building has 15 novs (7y), above the Mission Terrace average of 2.3.

Rent & eviction protection

Is 201 Onondaga 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 1963
2 or more units
6 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
Units6
Floors2
Year built1963
Total area4,700 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6951001
Ownership

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

Owner name
Chou Charles Z
Mailing address
201 Onondaga Ave Apt 4 San Francisco CA 94112
Last sale
010798

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 6-unit, 2-story multi-family residential building at 201 Onondaga Avenue in Mission Terrace, owned by Charles Z Chou and constructed in 1963, is currently undergoing significant infrastructure upgrades. As of October 2024, permits have been issued or reinstated for window replacements (24 units), an electrical service upgrade to 200-amp with new feeders and subpanel replacements, and a system replacement to meet current fire code requirements. However, there are several concerning active complaints from 2024 regarding unpermitted roof and window work, as well as water leaks in multiple units, and a question about compliance with the mandatory soft-story retrofit program.

The building has a history of maintenance and safety compliance issues, particularly evident in routine inspections from 2001 through 2023, with violations including gas shutoff tool requirements, self-closing exterior door devices, fire extinguisher maintenance, and various plumbing and electrical concerns. Recent fire safety violations from late 2023-2024 have been recorded for the adjacent 1000 Cayuga Avenue address, showing issues with emergency lighting, alarm systems, and sprinkler maintenance, though most of these have been abated. The property currently shows several infrastructure concerns outside the building, with multiple reports of sidewalk defects and tree root damage in the vicinity as of late 2024. The building's maintenance history suggests a pattern of addressing violations and complaints, but recent active complaints about unpermitted work and water leaks indicate ongoing maintenance challenges.

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

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Risk rating

How 201 Onondaga 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
32th percentile

Out of 149 buildings in this neighborhood, 101 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
59%
No DBI
violation
41%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 25.0%
Moderate concern 25.4%
Severe concern 49.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

201 Onondaga Ave event timeline

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

2026
311 Request Jun 03
Blocking driveway cite tow
Parking Enforcement
Planning RecordMar 06
The project proposes to convert part of a garage area into a new ADU, with an anticipated address of, 201 Onondaga Avenue Apt. 7.

See all 21 events

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

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Every record we have

Full data for 201 Onondaga 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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