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1848-1850 Filbert St

Cow Hollow, SF 94123 0519013A 2 units · 2 fl · 1926

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 1848-1850 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 1926
2 or more units
2 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
Units2
Floors2
Year built1926
Total area3,238 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0519013A
Ownership

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

Owner name
Lawrence Hall Tsao Louie Re
Mailing address
Louie Lawrence Hall Tsao Tr 62 Toledo Way San Francisco CA 94123
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.

1850 Filbert St, San Francisco, CA 94123
1848 Filbert St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The two-unit, two-story multi-family residential building at 1848-1850 Filbert Street in Cow Hollow, owned by Lawrence Hall Tsao Louie Re, was constructed in 1926 and has maintained a relatively consistent record of permitted improvements over the years. The building has undergone three documented reroofing projects: one in 1992, another in 2006 (with a permit cost of $4,500), and most recently a street space permit issued in 2015. Historical records show previous street space and sidewalk repair work was completed in 2004.

In terms of recent activity and resident experience, the property has experienced persistent issues with parking enforcement, particularly regarding driveway blocking. Between 2022 and early 2024, there were eight documented cases of driveway blocking, with varying levels of enforcement response including citations and inability to locate the offending vehicles. Notable incidents include two resolved cases on August 7, 2022, involving a Jeep Grand Cherokee and a Scion xA, as well as a citation issued on April 26, 2023, for a VW Passat. The property also faced a brief issue with an abandoned vehicle situation in May 2022, which was resolved within a week, and had one street cleaning matter involving a Christmas tree removal in January 2022. The extensive record of driveway blocking incidents suggests ongoing challenges with parking management in the vicinity, though these are external to the building's structural and operational integrity.

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

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Risk rating

How 1848-1850 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
90th percentile

Out of 861 buildings in this neighborhood, 86 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
90%
No DBI
violation
10%
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.

DBI complaints, owner's portfolio

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

Estimated permit spend (past 7 years)

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

Building permits (past 7 years)

Number of permits pulled at this address — construction or renovation activity over 7 years.

12-Month severity forecast
No violation 89.1%
Moderate concern 8.2%
Severe concern 2.7%
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

1848-1850 Filbert St event timeline

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

2026
311 Request May 29
Blocking driveway cite tow
Parking Enforcement
311 RequestApr 24
Blocking driveway cite tow

See all 5 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1848-1850 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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