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422 9Th Ave

Inner Richmond, SF 94118 1536047 15 units · 3 fl · 1966

Nothing on record for this building in the last seven years, but our model still flags a rising risk of maintenance problems in the next 12 months. That forecast comes from the owner's wider portfolio and the surrounding area, not from this building's own record — treat it as a reason to ask questions, not as evidence of a problem. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Inner Richmond — not a forecast
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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 422 9Th 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 1966
2 or more units
15 units
Property type
Multi-Family Residential
Zoning
RM1
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1966
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units15
Floors3
Year built1966
Total area13,338 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1536047
Ownership

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

Mailing address
1145 Market St Fl 12 San Francisco CA 94103
Last sale
—

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 15-unit, 3-story multi-family residential building at 422 9th Avenue, owned by Trinity G2 Holding LLC and constructed in 1966, has experienced several significant maintenance and safety events over its history. Most notably, there is currently a fire alarm system upgrade in progress (2025) involving new devices and low-frequency sounders in sleeping areas, along with associated electrical work. The building has had recurring issues with its fire alarm system, with multiple violations and corrections between 2013 and 2024, suggesting ongoing challenges with fire safety equipment maintenance. Recent improvements include a domestic boiler replacement in 2019 and a substantial kitchen and bathroom renovation in unit 205 in 2015, though this renovation prompted a complaint in 2015 regarding after-hours construction noise. Historical issues from the 1990s included multiple water-related problems, with roof leaks documented in 1996-1998 and interior water damage complaints.

The building has undergone various structural and systems upgrades over the decades, including exterior framing repairs (2003), a street space permit (2003), and multiple roofing projects. A notable complaint about unauthorized construction work in 2003 was reported, and five fire escape-related violations were documented in 2002, though these were abated by July 2002. More recent maintenance activity includes three consecutive fire safety inspections between 2021 and 2024, with violations issued in 2020 and September 2024. The property has generally complied with routine inspections, including annual housing inspections, though there were significant tenant complaints about water issues and construction work in the mid-1990s. The building's current owners appear to be actively addressing fire safety concerns, as evidenced by the ongoing fire alarm system upgrade and recent boiler replacement, though the frequency of fire system-related complaints suggests this remains an area requiring attention.

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

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Risk rating

How 422 9Th 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
1stpercentile

Out of 1723 buildings in this neighborhood, 1706 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
26%
No DBI
violation
74%
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 size

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

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month risk forecast
High failure risk 74%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

422 9Th Ave apartment reviews

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On the map

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The story over time

422 9Th Ave event timeline

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

2026
Fire Complaint Jun 16
Alarm Systems

See all 10 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 422 9Th Ave apartments

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

Side by side

How 422 9Th Ave compares to the neighborhood

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