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1379-1381 21St Ave

Central Sunset, SF 94122 1776009P 2 units · 2 fl · 1940

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 Sunset
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Central Sunset average of 0.7.

Rent & eviction protection

Is 1379-1381 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 1940
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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 built1940
Total area3,000 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1776009P
Ownership

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

Owner name
Wong 1991 Trust
Mailing address
Wong Dara Trustee 1381 21St Ave San Francisco CA 94122
Last sale
050500

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.

1381 21st Ave, San Francisco, CA 94122
1379 21st Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The Wong 1991 Trust-owned property at 1379-1381 21st Avenue is a two-unit, two-story multi-family residential building located in San Francisco's Central Sunset neighborhood. Constructed in 1940 in the flats and duplex style, this building has undergone several significant maintenance and improvement projects over the years. Most notably, in September 2017, the building received a major roofing upgrade with a completed $11,000 re-roofing project. Earlier improvements include the installation of aluminum windows in February 1988, which was successfully completed.

The building's history includes one documented water-related complaint from March 1995, which involved water issues affecting both a garage and a tenant's bathroom. This complaint was resolved within approximately two weeks (by March 29, 1995) and involved concerns about water backflow affecting both the tenant's tub and the garage area. The complaint resolution indicated a temporary situation related to the tenant's use of the bathtub for pregnancy-related comfort, though the owner initially attributed some of the issue to tenant actions. Since that incident, there have been no recorded complaints or reported water issues, and the property has maintained an active status without any open violations or current complaints on file.

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

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Risk rating

How 1379-1381 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 814 buildings in this neighborhood, 220 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.

Construction spend, owner's portfolio

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

Neighborhood location

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

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 83.5%
Moderate concern 11.4%
Severe concern 5.1%
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

1379-1381 21St Ave event timeline

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

2024
311 Request Jun 10
Bulky items
Boxed or Bagged Items

See all 1 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1379-1381 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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