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3901 Folsom St

Bernal Heights, SF 94110 5702032 2 units · 1 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 Bernal Heights
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Bernal Heights average of 1.2.

Rent & eviction protection

Is 3901 Folsom 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 1900
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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
Floors1
Year built1900
Total area1,375 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5702032
Ownership

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

Owner name
Cyr Norman L Jr
Mailing address
3901 Folsom St San Francisco CA 94110
Last sale
121307

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 3901 Folsom Street in Bernal Heights, owned by Cyr Norman L Jr, is a single-story flat/duplex structure built in 1900. The property has undergone several maintenance and improvement projects over the years, including a garage door replacement in 2017 ($1,400), street space permits (2015-2016), sidewalk repairs (2009), and a roof re-shingling in 2007 ($4,200). Two significant complaints were filed in mid-2017 regarding unauthorized short-term rental activity, with reports of converted garage/basement space and hazardous wiring, though these violations were subsequently noted as abated.

The property has experienced various maintenance and compliance issues in recent years, particularly related to tree root damage and sidewalk conditions. Two open cases from 2023-2024 involve tree roots lifting the sidewalk, while other concerns such as graffiti, sidewalk defects, and noise disturbances have been documented and resolved. Recent 311 calls primarily relate to parking issues, with multiple reports of illegal parking and driveway blocking between 2023-2024. The building's history includes a period of multiple 311 complaints during 2023, including instances of graffiti, sidewalk problems, and a shared space noise violation. While some issues have been resolved, the property has experienced recurring challenges with external maintenance and enforcement matters, especially in relation to tree root damage and parking violations.

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

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Risk rating

How 3901 Folsom 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
63th percentile

Out of 1276 buildings in this neighborhood, 472 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
75%
No DBI
violation
25%
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.

Neighborhood (ZIP code)

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

Building age

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

12-Month severity forecast
No violation 72.4%
Moderate concern 18.7%
Severe concern 8.9%
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

3901 Folsom St event timeline

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

2026
311 Request May 20
Garbage and debris
other bagged boxed contained garbage
311 RequestMay 20
Other including abandoned toter

See all 5 events

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

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Every record we have

Full data for 3901 Folsom 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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