Free SF apartment background check

376 21St Ave

Central Richmond, SF 94121 1452046 15 units · 3 fl · 1963

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

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 376 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 1963
2 or more units
15 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
Units15
Floors3
Year built1963
Total area13,107 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1452046
Ownership

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

Owner name
Virginia Y Mac Gift Tr 2012
Mailing address
Mac Min Liang & Chok-leng I Po Box 22136 San Francisco CA 94122
Last sale
031219

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story, 15-unit apartment building at 376 21st Avenue in the Central Richmond neighborhood, built in 1963, has undergone several significant improvements and faced various challenges over the years. Most notably, the building completed a mandatory soft-story seismic retrofit in 2016, bringing it into compliance with San Francisco's building codes, at a cost of $85,000. The building has experienced recurring issues with moisture and maintenance, particularly in Unit #104, with multiple complaints about mold, mildew, and water-related problems between 2010-2011. The property has maintained its fire safety systems relatively well, though there have been several fire alarm system-related violations between 2006 and 2024, with the most recent violation in May 2024 requiring correction.

The building's maintenance history shows attention to structural issues, including dry rot repairs in 2003 and 2011, and a complete window replacement project in 2006 that involved installing 51 new vinyl windows. Recent concerns have centered around building systems, such as a 2017 complaint regarding PG&E gas service location below the slab, which was determined to be a plumbing code violation. While the building has had some violations and complaints over the years, most have been resolved through proper channels. The property appears to be generally well-maintained in recent years, with completed seismic retrofitting and periodic maintenance activities, though there is ongoing attention required for fire alarm system maintenance as evidenced by the most recent violation. Recent 311 calls (2024-2025) primarily relate to street-level issues such as garbage management and parking concerns, which are not directly related to building conditions.

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

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Risk rating

How 376 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
4th percentile

Out of 2250 buildings in this neighborhood, 2160 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
36%
No DBI
violation
64%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Property class (A15)

The assessor's property-class code, which correlates with building type and the violation rates the model expects.

12-Month severity forecast
No violation 28.8%
Moderate concern 57.5%
Severe concern 13.7%
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

376 21St Ave event timeline

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

2026
311 Request May 04
Garbage and debris
other loose garbage debris yard waste
Building PermitApr 16
Reroofing- no torch down

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 376 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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