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463 21St Ave

Central Richmond, SF 94121 1523013 3 units · 2 fl · 1922

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 463 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 1922
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units3
Floors2
Year built1922
Total area4,921 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1523013
Ownership

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

Owner name
Leong Raymond & Karen Revoc
Mailing address
Raymond & Karen Leong 463 21St Ave San Francisco CA 94126
Last sale
050496

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit multi-family residential building at 463 21st Avenue in the Central Richmond neighborhood, owned by Raymond and Karen Leong Revocable Trust, has undergone significant window and door improvements over the past several years. The 1922 two-story structure has seen systematic updates to its windows, with the most recent work completed in early 2024 involving the replacement of four rear windows, continuing a pattern of window upgrades that began in 2014. Between 2014 and 2024, the property has received careful attention to window maintenance, including replacing front and rear windows with wood-clad aluminum and fibrex materials, with all installations meeting modern energy efficiency standards (U-factor requirements specified).

The building's maintenance history shows attention to structural and aesthetic improvements, including a 2014 door replacement and earlier repairs such as termite remediation in 1995. Historical records indicate a vertical and horizontal addition was completed in 1989, and while a reroofing permit from 1999 is listed as expired, no roofing issues have since been reported. The property has experienced minimal external issues, with only four 311 calls documented since 2019, relating to sidewalk cleaning and parking violations, none of which indicate persistent problems or safety concerns. The most recent incident was resolved in September 2024 involving debris collection, and previous issues were similarly addressed promptly. The building's permit and maintenance record suggests regular upkeep and proactive improvements by the owners, with particular focus on energy efficiency and window maintenance over the past decade.

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

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Risk rating

How 463 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
77th percentile

Out of 2250 buildings in this neighborhood, 518 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.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

Director's hearings, owner's portfolio

Escalated DBI enforcement actions across all of this owner's buildings.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 79.3%
Moderate concern 15.7%
Severe concern 5.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

463 21St Ave apartment reviews

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The story over time

463 21St Ave event timeline

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

2026
311 Request May 03
Blocking driveway cite only
Parking Enforcement

See all 4 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 463 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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