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20-22 Langton St

South of Market, SF 94103 3730093 2 units · 2 fl · 1914

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 South of Market
At or below average
avg 3.3
0
FewerMore

This building has 0 novs (7y), at or below the South of Market average of 3.3.

Rent & eviction protection

Is 20-22 Langton 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 1914
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RED
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
Floors2
Year built1914
Total area2,208 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3730093
Ownership

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

Owner name
Laraine Coralie Koffman Lvg
Mailing address
Laraine Coralie Koffman Tru 777 Le Conte Ave San Francisco CA 94124
Last sale
050900

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.

20 Langton St, San Francisco, CA 94103
22 Langton St, San Francisco, CA 94103
Augrented Insights
Initial analysis

The property at 20-22 Langton Street is a two-unit, two-story multi-family residential building constructed in 1914, currently owned by Laraine Coralie Koffman Lvg. The building's most significant recorded issues occurred in October 2003, when a series of fire safety violations were documented, including problems with fire extinguisher maintenance, improper garbage receptacle placement, and combustible storage near water heaters. All these violations were addressed and abated by November 13, 2003. A routine safety inspection took place in 2008 without any notable follow-up issues. More recently, in late 2020, there was a noise and bright construction lights complaint, which was resolved by April 2022.

The current condition of the property appears relatively stable, though there are multiple recent (December 2024) reports of garbage, debris, and maintenance issues in the surrounding area, including missing side sewer vent cover and various reports of waste management problems. These external issues, while not directly related to the building's condition, may impact the overall environment. The most recent documented building-related complaints date back to 2020-2022 and there have been no major violations or safety concerns reported in recent years. However, it's worth noting that December 2024 has seen multiple service requests regarding street and sidewalk conditions around the property, though most of these have been properly addressed or resolved.

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

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Risk rating

How 20-22 Langton 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
29th percentile

Out of 430 buildings in this neighborhood, 305 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
48%
No DBI
violation
52%
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 (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

DBI complaints, owner's portfolio

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 39.4%
Moderate concern 37.6%
Severe concern 23.0%
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

20-22 Langton St event timeline

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

2026
311 Request May 10
Garbage and debris
human waste or urine
311 RequestApr 30
Garbage and debris

See all 6 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 20-22 Langton St 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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