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1550-1552 12Th Ave

Inner Sunset, SF 94122 1857024 4 units · 2 fl · 1904

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Sunset
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Inner Sunset average of 1.1.

Rent & eviction protection

Is 1550-1552 12Th 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 1904
2 or more units
4 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
Units4
Floors2
Year built1904
Total area2,340 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1857024
Ownership

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

Owner name
Yu Yan Yan
Mailing address
1552 12th Ave San Francisco CA 94122
Last sale
050517

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.

1552 12th Ave, San Francisco, CA 94122
1550 12th Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The property at 1550-1552 12th Avenue is a two-story, four-unit multi-family residential building constructed in 1904, currently owned by Yu Yan Yan. The building's history shows significant renovations and maintenance work over the past two decades, with major improvements completed in 2014 including a kitchen relocation, bathroom remodels, bedroom conversion, and associated electrical and plumbing updates on the second floor, totaling approximately $30,000. Prior to that, the building underwent several important repairs, including a $7,500 reroofing project completed in 2001 and a gas houseline extension installed in 2012.

Of particular note is a violation case from February 2000 (complaint #200001861) regarding unauthorized unit conversions and several safety concerns, including inadequate wiring, accessible fuse boxes, and fire hazards. This case was officially abated by September 2000, with some related violations also resolved through multiple permits in June 2000. The property has undergone regular maintenance since then, including sidewalk repairs in 2009 and various street space permits. More recently, there have been several 311 calls regarding tree maintenance issues between 2019-2024, though most of these have been resolved or determined to be normal growth conditions. The most recent recorded issue was a parking violation on the sidewalk in September 2024, which was resolved with a citation. The building appears to have maintained compliance with safety codes since the 2000 violation case, with no active violations on record.

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

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Risk rating

How 1550-1552 12Th 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
19th percentile

Out of 1493 buildings in this neighborhood, 1209 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
63%
No DBI
violation
37%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Neighborhood (ZIP code)

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 46.9%
Moderate concern 21.1%
Severe concern 32.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

1550-1552 12Th Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 1550-1552 12Th 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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