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846-850 Filbert St

Russian Hill, SF 94133 0091014 2 units · 2 fl · 1906

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 Russian Hill
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 846-850 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 1906
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1906
Total area2,428 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0091014
Ownership

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

Owner name
Lee George Wong
Mailing address
P O Box 23174 Juneau AK 99802
Last sale
032798

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.

846 Filbert St, San Francisco, CA 94133
850 Filbert St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The two-unit residential building at 846-850 Filbert Street in Russian Hill, owned by George Wong, is a two-story flats and duplex structure dating back to 1906. The property has undergone several notable maintenance and improvement efforts over the years, including the installation of three kitchen windows in 2013 with energy-efficient ratings (U-factor 0.40), repairs to dry-rot in the rear stairs and deck in 1997, and a roofing project initiated in 1997, though records show this permit expired.

The building's recent history shows some concerning infrastructure issues, with a sewage back-up incident near the side sewer vent reported and resolved in September 2024, marking the most recent significant plumbing event. The property has experienced numerous urban maintenance challenges in the surrounding area, particularly in 2021-2024, including multiple instances of human/animal waste (three cases in November 2021, one in June 2022, and one in May 2021) requiring city intervention, along with reports of hazardous materials (liquids) and tree-related concerns in 2021. A recent garbage and debris complaint was resolved in December 2024. The building's maintenance record shows attention to structural improvements over the years, though the relatively high number of street cleaning and urban maintenance calls in the vicinity suggests ongoing challenges with the immediate urban environment, particularly regarding waste management and surface maintenance.

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

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Risk rating

How 846-850 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
87th percentile

Out of 1133 buildings in this neighborhood, 147 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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Building age

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 81.9%
Moderate concern 9.5%
Severe concern 8.6%
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

846-850 Filbert St event timeline

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

2026
311 Request Apr 04
Blocked sidewalk
spin standing scooter
311 RequestFeb 25
Sewage back-up discharge

See all 3 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 846-850 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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