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934-938 Corbett Ave

Twin Peaks, SF 94131 2799011 3 units · 2 fl · 1900

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 Twin Peaks
At or below average
avg 3.0
3
FewerMore

This building has 3 novs (7y), at or below the Twin Peaks average of 3.0.

Rent & eviction protection

Is 934-938 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 1900
2 or more units
3 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
Units3
Floors2
Year built1900
Total area1,935 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2799011
Ownership

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

Owner name
Kohlruss Andrea
Mailing address
938 Corbett Ave San Francisco CA 94131
Last sale
000000

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.

934 Corbett Ave, San Francisco, CA 94131
936 Corbett Ave, San Francisco, CA 94131
938 Corbett Ave, San Francisco, CA 94131
Augrented Insights
Initial analysis

The property at 934-938 Corbett Avenue is a two-story, three-unit multi-family residential building constructed in 1900, currently owned by Andrea Kohlruss. The building has undergone several significant infrastructure improvements over the years, including a 2004 electrical upgrade with the installation of a 200-amp underground conversion, and a 2010 plumbing project to replace the sewer line. A serious plumbing incident occurred in January 2010 when the property's sewer system leaked into the neighboring property at 944 Corbett Avenue, creating a health hazard that required inspection and resolution within eight days.

The building's maintenance history is relatively clean, with no recent building code violations or significant safety concerns on record. However, there have been two documented gas leak incidents (423). In terms of recent activity, there have been multiple 311 calls in the vicinity during 2024, primarily relating to street cleaning, garbage issues, and transit shelter maintenance, though these appear to be external to the building itself. The fire department responded to several false alarms and a gas leak situation, but there were no civilian injuries reported in any of these incidents. The most recent building-related permit activity was in 2010 with the sewer line replacement, suggesting no major structural or systems work has been required in over a decade.

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

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Risk rating

How 934-938 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
54th percentile

Out of 172 buildings in this neighborhood, 79 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
61%
No DBI
violation
39%
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.

Neighborhood location

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 53.4%
Moderate concern 33.5%
Severe concern 13.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

934-938 Corbett Ave event timeline

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

2026
311 Request Mar 05
Other illegal parking
Parking Enforcement

See all 12 events

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

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Every record we have

Full data for 934-938 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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