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791-797 19Th Ave

Central Richmond, SF 94121 1662018 4 units · 2 fl · 1922

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 Central Richmond
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.

Rent & eviction protection

Is 791-797 19Th 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 1922
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RM2
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 built1922
Total area5,204 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1662018
Ownership

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

Owner name
Lai Man & Chee Heung Chan L
Mailing address
Lui Lai Man & Chee Heung Ch 791-797 19Th Ave San Francisco CA 94121
Last sale
050500

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.

793 19th Ave, San Francisco, CA 94121
795 19th Ave, San Francisco, CA 94121
797 19th Ave, San Francisco, CA 94121
791 19th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-story, four-unit apartment building at 791-797 19th Avenue in San Francisco's Central Richmond neighborhood, constructed in 1922, has experienced several notable incidents impacting resident safety and building maintenance over its history. The building underwent significant scrutiny in the early 2000s, with multiple housing violations documented in October 2002, including issues with stairs, fire proofing, plumbing, and window repairs, all of which were eventually abated by June 2003. A second round of routine violations was recorded in June 2010, addressing similar concerns with stairs, fire protection, and handrails, though these were promptly resolved by September 2010. More recently, there have been two carbon monoxide detector activations due to malfunction and one toxic condition incident, though fortunately without civilian injuries.

The property has had several infrastructure and maintenance challenges in recent months, including refrigeration and plumbing issues, with records showing a sewage back-up incident in August 2024 and a sewer service request in November 2024. Multiple street-related permits were issued between 2006-2011 for sidewalk and street space usage, though the associated costs were minimal. Recent 311 calls from late 2024 indicate ongoing urban challenges in the vicinity, including issues with encampments, graffiti, and parking violations, though these external matters are not directly related to building conditions. The most recent documented building inspection records and recent service calls suggest that while the property has addressed historical maintenance issues, it continues to experience periodic utility and infrastructure challenges typical of older multi-family residential buildings in the area.

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

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Risk rating

How 791-797 19Th 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
20th percentile

Out of 2250 buildings in this neighborhood, 1800 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
73%
No DBI
violation
27%
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.

Estimated permit spend (past 7 years)

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

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

12-Month severity forecast
No violation 70.2%
Moderate concern 21.0%
Severe concern 8.8%
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

791-797 19Th Ave event timeline

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

2026
311 Request May 23
Blocking driveway cite only
Parking Enforcement
311 RequestMay 23
Blocking driveway cite only

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 791-797 19Th 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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