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904 Corbett Ave

Twin Peaks, SF 94131 2799002 4 units · 3 fl · 1977

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 Twin Peaks
At or below average
avg 3.0
0
FewerMore

This building has 0 novs (7y), at or below the Twin Peaks average of 3.0.

Rent & eviction protection

Is 904 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 1977
2 or more units
4 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
Units4
Floors3
Year built1977
Total area3,500 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2799002
Ownership

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

Owner name
Khostovan Ali & Fatemah
Mailing address
506 Craig 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

The 4-unit, 3-story multi-family residential building at 904 Corbett Ave, owned by Khostovan Ali & Fatemah, was constructed in 1977 and has experienced several significant maintenance and safety issues over the years. Most recently, in early 2023, tenants reported an inoperable intercom system that had been out of service for at least six months, and in November 2023, there was a complaint about removed fire doors, though this case has not yet been adjudicated. The building underwent reroofing work in 2007 costing $9,000, but has faced multiple safety and maintenance challenges, particularly in 2003-2007 when several violations were documented. These included issues with fire escapes, security requirements (such as deadlatch installation), egress obstructions, water damage, interior surface problems (deteriorated ceilings, mold/mildew), combustible storage concerns, and smoke detector deficiencies. A notable incident occurred in December 2006 when a ceiling collapsed due to bathroom leakage, exposing insulation and wiring. The building also had recurring fire alarm system issues, with two activation incidents recorded, though neither resulted in fires or civilian injuries. More recently, there have been numerous parking enforcement calls regarding driveway blocking in 2024, with several resulting in citations, though these are not directly related to the building's condition or safety.

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

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Risk rating

How 904 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
25th percentile

Out of 172 buildings in this neighborhood, 129 are predicted to be safer.

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

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

DBI tenant complaints (past 7 years)

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

Number of units

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

12-Month severity forecast
No violation 41.7%
Moderate concern 33.2%
Severe concern 25.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

904 Corbett Ave apartment reviews

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The story over time

904 Corbett Ave event timeline

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

2023
DBI Complaint Nov 14
Fire doors have been removed
Housing Inspection Services
DBI ComplaintJan 31
All the tenants have been complaining to the landlord that the intercom system hasn't been working for at least 6 months even longer.

See all 2 events

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

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Every record we have

Full data for 904 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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