Free SF apartment background check

800-804 Filbert St

Russian Hill, SF 94133 0091006 9 units · 3 fl · 1909

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

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 800-804 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 1909
2 or more units
9 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units9
Floors3
Year built1909
Total area10,200 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0091006
Ownership

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

Owner name
Wong Lillian L
Mailing address
1000 Lake St San Francisco CA 94118
Last sale
010201

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.

1901 Mason St, San Francisco, CA 94133
1909 Mason St, San Francisco, CA 94133
800 Filbert St, San Francisco, CA 94133
804 Filbert St, San Francisco, CA 94133
802 Filbert St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The 9-unit apartment building at 800-804 Filbert Street in Russian Hill, owned by Lillian L Wong, is a 3-story, 1909 structure that has undergone several significant modifications and faced various compliance issues over the years. Most notably, the building completed a mandatory $108,000 soft-story retrofit in 2017 under San Francisco building codes, achieving full compliance with seismic safety requirements. The property has a documented history of unauthorized modifications, particularly concerning basement units. In 2006, a complaint was filed regarding illegal conversions of a storage room into habitable space, which led to multiple violations including inadequate light, ventilation, egress issues, and unauthorized electrical and plumbing work. These violations were formally abated by July 31, 2007, following work to cap off the illegal units.

The building underwent routine safety inspections in 2000, 2003, 2006, and 2015, with the latter requiring additional fire safety measures including smoke enclosure doors and carbon monoxide alarms, all of which were subsequently addressed. Recent maintenance work includes street space permits issued in 2019 and 2024, along with electrical improvements such as Ufer ground wiring installation. The property has experienced minimal serious incidents, with only two recorded fire department responses for smoke removal and a false alarm, neither involving civilian injuries. Recent activity at the property has primarily consisted of routine maintenance and code compliance issues, with no major structural or safety concerns reported in recent years. The building's unit count and details have been verified and corrected in the database as of January 2024.

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

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Risk rating

How 800-804 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
6th percentile

Out of 1133 buildings in this neighborhood, 1065 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
20%
No DBI
violation
80%
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 size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Neighborhood location

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

12-Month severity forecast
No violation 8.7%
Moderate concern 24.8%
Severe concern 66.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

800-804 Filbert St apartment reviews

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The story over time

800-804 Filbert St event timeline

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

2026
311 Request Jan 10
Not offensive
mail box

See all 6 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 800-804 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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