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418-420 Corbett Ave

Clarendon Heights, SF 94114 2719003 2 units · 3 fl · 1938

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 Clarendon Heights
At or below average
avg 1.5
0
FewerMore

This building has 0 novs (7y), at or below the Clarendon Heights average of 1.5.

Rent & eviction protection

Is 418-420 Corbett 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 1938
2 or more units
2 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
Units2
Floors3
Year built1938
Total area2,068 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2719003
Ownership

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

Owner name
Heitner-O'Connell Trust
Mailing address
Heitner Mark & O'connell Ma 418 Corbett Ave San Francisco CA 94114
Last sale
052113

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.

420 Corbett Ave, San Francisco, CA 94114
418 Corbett Ave, San Francisco, CA 94114
Augrented Insights
Initial analysis

The property at 418-420 Corbett Avenue is a two-unit, two-story multi-family residential building constructed in 1938, currently owned by the Heitner-O'Connell Trust. The building has experienced recurring issues with dry rot and water damage over the years, with the most recent significant repairs occurring in December 2022 to address fungus and termite damage behind the stucco, and in 2019-2020 for water-related bathroom renovations and electrical panel upgrades. A series of violations and complaints in 2011-2013 regarding unpermitted construction work, including window installations and exterior wall modifications, required multiple permits and corrections, though these issues were eventually resolved. The building underwent a complete reroofing in 2007, and notable recent improvements include electrical upgrades in 2020 with new meter sections and panels.

The property has experienced various maintenance and compliance challenges, including multiple instances of false fire alarms and system malfunctions recorded between 2020-2023, though none resulted in civilian injuries. Recent exterior issues have been documented through 311 calls, primarily related to graffiti and public space maintenance, with several cases remaining open as of early 2025. While the building's maintenance history shows ongoing attention to structural and safety issues, particularly regarding water and pest damage, there have been relatively few major health or safety violations in recent years, with the most pressing concerns being the recurring nature of dry rot repairs and the recent electrical upgrades indicating an effort to maintain and improve building systems.

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

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Risk rating

How 418-420 Corbett 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
85th percentile

Out of 40 buildings in this neighborhood, 6 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Neighborhood location

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

DBI complaint rate, owner's portfolio

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

12-Month severity forecast
No violation 80.6%
Moderate concern 15.1%
Severe concern 4.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

418-420 Corbett Ave apartment reviews

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The story over time

418-420 Corbett Ave event timeline

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

2026
DBI Complaint Apr 13
There is a house on our block being remodeled. there has been a worker on the roof cutting/grinding something for the past several weeks, echoing down the block all day long. maybe it is tile or granite but it has been going on constantly. could they move this into the garage so we all don¿t have to hear it? i work from home and it is very disruptive.(311 sr 101003847263)
Code Enforcement Section

See all 7 events

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

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Every record we have

Full data for 418-420 Corbett 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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