Free SF apartment background check

1266-1268 20Th Ave

Central Sunset, SF 94122 1731030 2 units · 1 fl · 1956

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 Sunset
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 1266-1268 20Th 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 1956
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
NC2
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
Floors1
Year built1956
Total area1,356 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1731030
Ownership

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

Owner name
Woo Family Trust
Mailing address
Steven Sei & Olivia Sung Du 1757 Escalante Way Burlingame CA 94010
Last sale
083011

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.

1266 20th Ave #rear Blgd, San Francisco, CA 94122
1268 20th Ave #front Bldg, San Francisco, CA 94122
Augrented Insights
Initial analysis

The Woo Family Trust owns this 2-unit, 1-story multi-family residential building located at 1266-1268 20th Avenue in San Francisco's Central Sunset neighborhood. Built in 1956, the property has undergone several significant renovations, with the most substantial work occurring in 2008-2009. This included a comprehensive kitchen and bathroom remodel on the second floor, modification of storage rooms on the ground level, installation of a new bathroom, and upgrades to the electrical system including a main panel upgrade from 60amp to 100amp. The building's infrastructure improvements continued with the installation of a new furnace and water heater, and plumbing updates including new electrical work for storage and bathroom areas.

More recent maintenance history includes stair repairs to the rear building completed in 2002. The property has experienced some recent issues with street cleanliness and parking violations in the surrounding area, particularly in 2024, though these are external to the building itself. Notably, there was a malfunction with an elevator reported in September 2024, though this appears to be a temporary condition that was corrected. The building's recent maintenance record shows the property has generally been kept up to reasonable standards, with most historical permits showing proper completion of work, and no major safety concerns or violations on record. The property has been subject to periodic street cleaning and environmental service calls, most of which have been promptly resolved.

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

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Risk rating

How 1266-1268 20Th 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
87th percentile

Out of 814 buildings in this neighborhood, 106 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

DBI complaints, owner's portfolio

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

12-Month severity forecast
No violation 85.5%
Moderate concern 8.3%
Severe concern 6.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1266-1268 20Th Ave apartment reviews

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On the map

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The story over time

1266-1268 20Th Ave event timeline

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

2026
Building Permit May 13
#rear bldg: remodel (e) kitchen and bathroom at 2nd floor. no wall remove.
$50,000 · Issued

See all 1 events

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

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Every record we have

Full data for 1266-1268 20Th Ave apartments

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

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