Free SF apartment background check

870-872 Filbert St

Russian Hill, SF 94133 0091017 4 units · 2 fl · 1925

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 870-872 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 1925
2 or more units
4 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
Units4
Floors2
Year built1925
Total area4,542 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0091017
Ownership

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

Owner name
Sue Warren
Mailing address
1335 30th Ave San Francisco CA 94122
Last sale
102099

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.

872 Filbert St, San Francisco, CA 94133
71 Valparaiso St, San Francisco, CA 94133
73 Valparaiso St, San Francisco, CA 94133
870 Filbert St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The four-unit residential building at 870-872 Filbert Street in Russian Hill, owned by Sue Warren, has undergone several significant improvements since its construction in 1925. The most recent permitted work, issued in January 2025, involves reroofing with an estimated cost of $21,300. The property has seen substantial renovations in recent years, including a comprehensive kitchen and bathroom remodeling project in 2021 ($42,500) which included electrical panel upgrades and plumbing modifications. This followed a period of unpermitted work in 2011 that resulted in a building violation, though the issues were resolved by April 2012 through proper permitting and inspections, including a complete electrical system upgrade with new panels and circuits.

The building's infrastructure has been steadily maintained and upgraded, with major electrical work completed in 2012-2014 including installation of multiple sub-panels and a 200-amp main panel. Plumbing updates have been consistent, with the most recent work including sink and water heater relocations in 2021, following earlier comprehensive plumbing upgrades in 2014. The property has experienced typical urban issues as evidenced by 311 calls, mostly related to street-level concerns such as parking violations and sidewalk cleaning, though none directly related to building safety or maintenance. The building's documented history shows regular maintenance and upgrading of systems, with no active violations or safety concerns on record.

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

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Risk rating

How 870-872 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
82th percentile

Out of 1133 buildings in this neighborhood, 204 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
88%
No DBI
violation
12%
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.

Owner's portfolio size

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

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 60.7%
Moderate concern 15.2%
Severe concern 24.1%
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

870-872 Filbert St event timeline

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

2025
Building Permit Jan 02
Refooring(no hot works)
$21,225 · Complete

See all 5 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 870-872 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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