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119-121 Cornwall St

Inner Richmond, SF 94118 1431047 2 units · 3 fl · 1904

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Richmond
Above average
avg 0.9
7
FewerMore

This building has 7 novs (7y), above the Inner Richmond average of 0.9.

Rent & eviction protection

Is 119-121 Cornwall 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 1904
2 or more units
2 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.

Building characteristics
Units2
Floors3
Year built1904
Total area2,880 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1431047
Ownership

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

Owner name
Arlene Erlach Revoc Trust
Mailing address
121 Cornwall St San Francisco CA 94118
Last sale
040110

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

121 Cornwall St, San Francisco, CA 94118
119 Cornwall St, San Francisco, CA 94118
Augrented Insights
Initial analysis

The three-story multi-family residential building at 119-121 Cornwall Street, located in the Inner Richmond neighborhood, was constructed in 1904 and currently contains two units under the ownership of the Arlene Erlach Revocable Trust. The property has experienced several maintenance and safety issues over recent years, with the most significant concerns emerging between 2018-2021 regarding water drainage and roofing problems. A series of building violations filed in February 2019 remain active, including issues with stairs requiring repair, roof drainage systems, and the need for proper building permits, with a director hearing scheduled for January 2020. These violations followed multiple complaints about roof debris affecting neighboring properties, water flow issues, and gutter problems between 2018-2021.

The building's maintenance history shows some attention to structural elements, including a completed dry rot repair in 1999, various ceiling work in the early 1990s, and kitchen remodeling in 1987. More recently, in 2019, there was a permitted repair involving replacement of four threads and risers in the stairs, valued at $500, in response to prior violations. The property has also generated multiple parking-related complaints, particularly in 2023, though these are separate from the building's structural and maintenance issues. While there have been some street space and sidewalk repairs addressed in 2007, the most pressing concerns remain focused on the building's roofing and drainage systems, as evidenced by the pattern of complaints and violations over recent years.

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

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Risk rating

How 119-121 Cornwall 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
4th percentile

Out of 1723 buildings in this neighborhood, 1654 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
36%
No DBI
violation
64%
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.

DBI tenant complaints (past 7 years)

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

Permit rate, owner's portfolio

Per-building permit rate across the owner's portfolio.

DBI complaints, owner's portfolio

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

12-Month severity forecast
No violation 38.4%
Moderate concern 39.1%
Severe concern 22.4%
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

119-121 Cornwall St event timeline

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

2026
Building Permit Apr 27
Revision to bpa# 202602055323: deck demolition and reconstruction. originally planned as <50% repair, but wood in too poor condition that 100% replacement needed.
$20,000 · Filed
DBI ComplaintApr 06
Rain water from the upper roof at 121 cornwall st is pouring into neighbors property at 115 cornwall st because of insufficient gutter and drain system causing water to pool in lightwell.

See all 13 events

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

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Every record we have

Full data for 119-121 Cornwall St apartments

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

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