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371 20Th Ave

Central Richmond, SF 94121 1452015 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 Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 371 20Th Ave 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 area3,150 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1452015
Ownership

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

Owner name
Li Fmly Tr
Mailing address
Li Ben Sen & Ying Zhen Trus 371 20Th Ave San Francisco CA 94121
Last sale
060903

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 371 20th Avenue, located in San Francisco's Central Richmond neighborhood, is a two-story flats and duplex structure built in 1906 and currently owned by Li Fmly Tr. The building has undergone several significant improvements over the years, including a 1999 renovation that added a bedroom, play and laundry room, storage, and a half bath on the ground floor. Other notable work included a reroofing project in 1993 and the removal of a gas wall heater in 2000.

The property has experienced recurring sewer issues, with documented incidents of sewage backup in the 4-inch vent system in October 2018 and a flooding incident in December 2014, along with another sewer-related problem in October 2012 involving heavy grease in the lateral system. Recent years have seen multiple 311 calls related to street cleaning and parking issues, particularly concerning vehicles blocking driveways and parking on sidewalks, with one citation issued for sidewalk parking in January 2024. The building's safety record includes three fire department responses: a malfunctioning smoke detector, an invalid assist, and a water or steam leak incident, none of which resulted in civilian injuries. While the property has experienced some maintenance challenges, particularly related to its sewer system, there are no recent records of any major structural or safety concerns.

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

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Risk rating

How 371 20Th Ave'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
41th percentile

Out of 2250 buildings in this neighborhood, 1328 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Building age

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

Estimated permit spend (past 7 years)

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

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 76.0%
Moderate concern 19.9%
Severe concern 4.2%
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

371 20Th Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 371 20Th Ave 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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