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41-43 Langton St

South of Market, SF 94103 3730111 4 units · 2 fl · 1908

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in South of Market — not a forecast
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 41-43 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 1908
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
SLR
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1908
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units4
Floors2
Year built1908
Total area2,580 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3730111
Ownership

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

Mailing address
Varsha I Patel Po Box 1968 Burlingame CA 94011
Last sale

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

43 Langton St, San Francisco, CA 94103
41 Langton St, San Francisco, CA 94103
Augrented Insights
Initial analysis

The two-story multi-family residential building at 41-43 Langton Street, owned by Patel Enterprises LP, was constructed in 1908 and contains four units. The property has a significant history of maintenance and safety issues, with the most pressing concerns emerging in 2023-2024, when multiple fire code violations were documented, including issues with sleeping area requirements, sprinkler systems, and blocked exits. Recent complaints also indicated problems with fire extinguisher maintenance and other safety systems, though many of these violations were subsequently corrected. The building's historical maintenance record shows various improvements, including HVAC system installations in the 1990s and structural repairs in 2005 when support posts were replaced following a complaint. A series of building violations from 2003-2010 highlighted various safety concerns, including fire extinguisher requirements, weatherproofing issues, and lead paint hazards, all of which were eventually abated.

In early 2025, there have been several 311 calls regarding the property, primarily related to garbage and debris removal, and public space maintenance issues near the building. A significant recent complaint filed in February 2024 cited multiple fire code violations and safety concerns, including fire escape obstructions and roof structure issues, though these were recorded under a different adjacent property address (240 7th Street). While the building has undergone various repairs and improvements over the years, the recent cluster of fire safety violations in 2023-2024 indicates ongoing challenges with building systems and maintenance. A proposed development project from 2023-2024 suggested a potential large-scale redevelopment of the site, though the status of this proposal is currently listed as Closed - Withdrawn.

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

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Risk rating

How 41-43 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
41stpercentile

Out of 430 buildings in this neighborhood, 254 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

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.

Number of units

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

DBI tenant complaints (past 7 years)

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

Neighborhood (ZIP code)

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

12-Month risk forecast
Moderate failure risk 39%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

41-43 Langton St apartment reviews

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On the map

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The story over time

41-43 Langton St event timeline

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

2025
311 Request Apr 30
311 service request
Encampment
311 RequestJan 14
Public works

See all 6 events

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

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Every record we have

Full data for 41-43 Langton St apartments

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

Side by side

How 41-43 Langton St compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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