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354 21St Ave

Central Richmond, SF 94121 1452030 2 units · 2 fl · 1921

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 354 21St 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 1921
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 built1921
Total area2,500 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1452030
Ownership

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

Owner name
Rosemary Olson Revoc Tr
Mailing address
Olson Rosemary Trustee 3412 Plateau Dr Belmont CA 94002
Last sale
062900

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 354 21st Avenue in the Central Richmond neighborhood, currently owned by the Rosemary Olson Revocable Trust, is a two-story flats and duplex structure built in 1921. The building's documented history is relatively sparse, with only one notable permitted modification recorded from March 1999, involving structural work in the garage with the installation of steel beams and footings, though this permit has since expired.

The property has experienced ongoing parking-related issues over the past several years, with seven documented incidents between 2016 and 2024, including multiple cases of driveway blocking and illegal parking on sidewalks. The most recent parking complaint was lodged in November 2024 but was unable to be verified by responding officers. Additionally, there have been several instances requiring street and sidewalk cleaning, including the removal of abandoned automotive tires in October 2023, an abandoned Christmas tree in January 2024, and other general garbage cleanup missions in 2020. The building's immediate vicinity has also required attention for various maintenance issues, including the removal of either human or animal waste in August 2017 and the investigation of an abandoned vehicle report in November 2016, though the vehicle was gone upon inspection. While these incidents don't necessarily reflect directly on the building's internal conditions, they may impact the immediate neighborhood experience for residents.

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

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Risk rating

How 354 21St 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
48th percentile

Out of 2250 buildings in this neighborhood, 1170 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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 size

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Estimated permit spend (past 7 years)

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

12-Month severity forecast
No violation 78.3%
Moderate concern 11.9%
Severe concern 9.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

354 21St Ave apartment reviews

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The story over time

354 21St 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 354 21St 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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