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2354 21St Ave

Parkside, SF 94116 2349028 2 units · 2 fl · 1997

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 Parkside
At or below average
avg 0.8
0
FewerMore

This building has 0 novs (7y), at or below the Parkside average of 0.8.

Rent & eviction protection

Is 2354 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 1997
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors2
Year built1997
Total area3,080 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2349028
Ownership

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

Owner name
Tong Trust
Mailing address
Tong 2442 27Th Ave San Francisco CA 94116
Last sale
091898

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 2354 21st Avenue in Parkside is a two-unit multi-family residential building constructed in 1997, currently under the ownership of Tong Trust. The building's construction history shows significant development activity, beginning with kitchen and bathroom remodels completed in 1990, followed by a successful vertical addition in 1995 costing $130,000. A proposed horizontal addition in 1991 was withdrawn, and in 2007, a street space scaffold permit was issued but appears to have been utilized for temporary construction purposes. The building's maintenance and management record shows consistent attention to infrastructure improvements, though specific details of recent renovations are not documented in the available permit history.

The property's recent activity has primarily involved parking-related issues, with seven documented incidents between 2019 and 2023, most of which involved vehicles blocking driveways and resulting in citations. These incidents indicate an ongoing challenge with parking enforcement in the immediate vicinity. The only non-parking related service call was a Christmas tree removal in January 2021. More recently, in January 2024, there was a Rent Board interaction regarding fee housing inventory, which was resolved through communication with the caller about housing inventory licenses and rent increase inquiries. This suggests the property is maintaining compliance with housing regulations, though the frequency of parking enforcement calls indicates this remains an area of concern for residents in the building's vicinity.

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

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Risk rating

How 2354 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
73th percentile

Out of 255 buildings in this neighborhood, 69 are predicted to be safer.

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

Permit rate, owner's portfolio

Per-building permit rate across the owner's portfolio.

DBI complaints, owner's portfolio

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

12-Month severity forecast
No violation 73.0%
Moderate concern 12.4%
Severe concern 14.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

2354 21St Ave apartment reviews

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The story over time

2354 21St Ave event timeline

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

2025
Building Permit Oct 14
Revision to permit 202509266234: remove siding front, side and back, replace dryrot framing in-kind. street visible.
$10,000 · Complete
Planning RecordOct 14
Revision to permit 202509266234: Remove siding front, side and back, replace dryrot framing in-kind. Street Visible.

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 2354 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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