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205 21St Ave

Central Richmond, SF 94121 1412001 3 units · 2 fl · 1908

Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Central Richmond — not a forecast
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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 205 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 1908
2 or more units
3 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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1908
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units3
Floors2
Year built1908
Total area4,960 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1412001
Ownership

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

Mailing address
Yuen Lin Huie Wong, Trustee 1928 Balboa St San Francisco CA 94121
Last sale

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

205 21st Ave, San Francisco, CA 94121
5907 California St, San Francisco, CA 94121
5901 California St, San Francisco, CA 94121
5911 California St, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 205 21st Avenue in San Francisco's Central Richmond district is a 2-story, multi-family residential building constructed in 1908, containing 3 residential units and one commercial space, currently owned by Yuen Lin Huie Wong Survivor. The building has undergone several significant modifications over the years, with the most notable incident occurring in March 2010 when a ground floor commercial space was improperly converted to residential use with unauthorized kitchen and bathroom installations. This space also experienced electrical system issues due to unauthorized marijuana cultivation, leading to safety violations from the San Francisco Fire Department and subsequent PG&E service termination. The property underwent remediation work in 2010, including accessibility improvements to a toilet facility (with associated electrical work) and various corrective actions to remove the unauthorized installations, which were completed by August 2010.

The building has a history of both maintenance and compliance work, including foundation bolting improvements completed in 1995 and reroofing work from 1998. More recent activity at the property includes multiple reports of abandoned garbage and debris on the property and surrounding areas between August 2024 and January 2025, with at least eight separate incidents reported through 311 calls. While these recent calls primarily relate to external property maintenance issues rather than internal building conditions, they represent a recurring concern for the property's immediate surroundings. The most recent building permit on record (as of October 2023) dates back to 2010, suggesting limited major building modifications in recent years, though this may not accurately reflect current building conditions or improvements.

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

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Risk rating

How 205 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
16thpercentile

Out of 2250 buildings in this neighborhood, 1890 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
68%
No DBI
violation
32%
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.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Building age

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

Owner's portfolio size

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

12-Month risk forecast
Moderate failure risk 32%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

205 21St Ave apartment reviews

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On the map

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The story over time

205 21St Ave event timeline

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

2026
311 Request Jul 20
Garbage and debris
furniture
311 RequestMar 12
Affixed improperly

See all 5 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 205 21St Ave apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 205 21St Ave compares to the neighborhood

This building against comparable properties in Central Richmond. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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