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1840 Filbert St

Cow Hollow, SF 94123 0519013B 4 units · 2 fl · 1924

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 Cow Hollow
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Cow Hollow average of 0.7.

Rent & eviction protection

Is 1840 Filbert 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 1924
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH2
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
Floors2
Year built1924
Total area4,074 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0519013B
Ownership

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

Owner name
Norton Sylvia J 1997 Trust
Mailing address
Sylvia J Norton 1840 Filbert St San Francisco CA 94123
Last sale
030998

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 4-unit, 2-story multi-family residential building at 1840 Filbert Street in Cow Hollow, owned by the Norton Sylvia J 1997 Trust and built in 1924, has undergone several significant events throughout its history. Most recently, in late 2024, there were issues with the sewer system, including a sewage discharge from a catch basin and a damaged side sewer vent cover. The building experienced gas line work in 2012-2013, involving repairs to all four units and a subsequent gas line test. A notable cluster of building violations occurred in late 2001, related to security and fire safety issues, including missing smoke detectors in stairways and the lobby, fire escape ladder problems, and security device deficiencies; however, all these violations were abated by December 24, 2001. Earlier history shows interior demolition work in Apartment #1 and the garage was completed in 1984.

Recent maintenance activities have included multiple instances of street cleaning and waste removal by Recology in 2022-2023, and some parking enforcement actions for sidewalk parking and driveway blocking in 2024. The property has maintained regular housing inspections, with the most recent routine inspection recorded in 2006. A tenant buyout occurred at the adjacent address (1834 Filbert Street) in March 2020, involving one tenant and a payment of $50,000. The building's permit history shows minimal activity, with only street space permits issued in 2006-2007. Currently, there are no active building violations or major safety concerns recorded in the system.

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

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Risk rating

How 1840 Filbert 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
45th percentile

Out of 861 buildings in this neighborhood, 474 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.

Number of units

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

Building permits, owner's portfolio

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

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 46.7%
Moderate concern 15.2%
Severe concern 38.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

1840 Filbert St event timeline

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

2025
Plumbing Permit Dec 17
Work category: 1p; sewer and house trap replacement
Complete
311 RequestOct 13
311 service request

See all 3 events

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

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Every record we have

Full data for 1840 Filbert 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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