Free SF apartment background check

1231-1233 19Th St

Potrero Hill, SF 94107 4065026 2 units · 2 fl · 1900

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 Potrero Hill
At or below average
avg 1.1
0
FewerMore

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

Rent & eviction protection

Is 1231-1233 19Th St 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 1900
2 or more units
2 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
Units2
Floors2
Year built1900
Total area2,590 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot4065026
Ownership

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

Owner name
Christina Yang & Ryan Patri
Mailing address
Christina Yang & Ryan Patri 1233 19Th St San Francisco CA 94107
Last sale
022316

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.

1231 19th St, San Francisco, CA 94107
1233 19th St, San Francisco, CA 94107
Augrented Insights
Initial analysis

The two-unit residential building at 1231-1233 19th Street in Potrero Hill is a two-story, multi-family structure built in 1900, currently owned by Christina Yang and Ryan Patri. The property has undergone several significant improvements over the past decade, including the renovation of a detached accessory structure in 2013 ($29,529), installation of a new bathroom in 2013-2014, electrical updates including rewiring of a back office in 2013, and a complete reroofing in 2012. A notable cancelled permit from 2000 had proposed a garage addition and third-floor mezzanine, while a 2017 water line replacement permit remains in expired status.

The property has experienced recurring sewer issues, with four documented sewage backup incidents between 2019 and 2021, primarily involving 4-inch sewer vents, some of which showed potential tree root intrusion problems. Two building complaints were filed in 2012 and 2015, one regarding unauthorized remodeling and potential lead paint concerns, and another about unpermitted pressure washing activities, though both cases are no longer active. The building's most recent maintenance history shows work completion in various systems, including plumbing (new shower pan, bathroom installation) and electrical (Ufer ground installation). The property has also been the subject of multiple parking-related incidents near the address, with six parking enforcement calls recorded between 2023-2025, though these are external to the building's actual maintenance and safety conditions.

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

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Risk rating

How 1231-1233 19Th St'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
76th percentile

Out of 726 buildings in this neighborhood, 174 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
83%
No DBI
violation
17%
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.

Building age

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

Property class: multi-family flat

2–4 unit flats (class F) are a common SF building type with their own maintenance and complaint patterns.

Neighborhood (ZIP code)

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

12-Month severity forecast
No violation 77.6%
Moderate concern 17.3%
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

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The story over time

1231-1233 19Th St 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 1231-1233 19Th St 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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