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2275-2277 21St Ave

Parkside, SF 94116 2328009L 2 units · 2 fl · 1928

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 2275-2277 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 1928
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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 built1928
Total area3,180 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2328009L
Ownership

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

Owner name
Banh Duong Cam & Lam Binh D
Mailing address
2275 21st Ave San Francisco CA 94116
Last sale
092905

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.

2277 21st Ave, San Francisco, CA 94116
2275 21st Ave, San Francisco, CA 94116
Augrented Insights
Initial analysis

The property at 2275-2277 21st Avenue, located in San Francisco's Parkside neighborhood, is a two-unit, two-story multi-family residential building constructed in 1928. The building's maintenance history shows three significant infrastructure updates: a reroofing project completed in 1989, a gas houseline extension installation in 2021, and an electrical system upgrade in 2005 that included the addition of one house meter, lighting fixtures, switches, receptacles, and circuits.

The property has experienced multiple service requests and incidents between late 2024 and early 2025, with the most frequent issues relating to waste management. There were three documented cases of garbage totes being left out continuously, resulting in notices and service referrals to Recology. Parking has been a recurring concern, with multiple reports of driveway blocking, though some cases were either resolved with citations or marked as invalid due to incomplete reporting. Other maintenance matters have included a resolved pavement defect, a general public works service request, and a rent board inquiry regarding unit count correction and fee information. The building's permit history, while sparse, indicates at least some attention to infrastructure maintenance over the decades, with no records of major repairs or violations that would significantly impact resident safety or comfort.

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

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Risk rating

How 2275-2277 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
72th percentile

Out of 255 buildings in this neighborhood, 71 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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Construction spend, owner's portfolio

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

12-Month severity forecast
No violation 66.2%
Moderate concern 18.5%
Severe concern 15.3%
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

2275-2277 21St Ave event timeline

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

2021
Plumbing Permit Jun 17
Work category: 1p; gas houseline ext
Complete

See all 1 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2275-2277 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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