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1606-1608 21St Ave

Central Sunset, SF 94122 1923028A 2 units · 1 fl · 1941

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. 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 Sunset — not a forecast
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 1606-1608 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 1941
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.

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 1941
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
Units2
Floors1
Year built1941
Total area1,264 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1923028A
Ownership

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

Mailing address
Chan Chui Trustee 145 Upland Dr San Francisco CA 94127
Last sale
August 18, 2003

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.

1606 21st Ave, San Francisco, CA 94122
1608 21st Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The property at 1606-1608 21st Avenue in the Central Sunset neighborhood is a one-story, two-unit multi-family residential building constructed in 1941 and currently owned by Chui Chan Revocable Living Trust. The building's maintenance records show consistent upkeep of the roofing system, with two documented reroofing projects - one completed in 2004 at a cost of $5,800 and another in 2019 for $5,500, indicating regular maintenance of this critical building component.

The property has experienced recurring issues with parking violations in the immediate vicinity, particularly during 2020, with multiple reports of vehicles parking on sidewalks and blocking driveways between October 5 and October 24, 2020. While several of these incidents required police response, officers were generally unable to validate the reported violations upon arrival. More recently, in 2023, there were three separate reports of abandoned vehicles near the property, though none of these vehicles were found to be present when enforcement arrived. It's worth noting that all these parking-related incidents occurred in public roadway areas rather than on the property's private property, and they appear to be primarily street-level issues rather than problems directly affecting the building itself.

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

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Risk rating

How 1606-1608 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
51stpercentile

Out of 814 buildings in this neighborhood, 399 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
86%
No DBI
violation
14%
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.

Estimated permit spend (past 7 years)

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

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month risk forecast
Low failure risk 14%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1606-1608 21St Ave apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

1606-1608 21St Ave event timeline

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

2026
311 Request Jul 08
Abandoned vehicle
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 1606-1608 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 1606-1608 21St Ave compares to the neighborhood

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