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491-493 15Th Ave

Central Richmond, SF 94118 1529017 2 units · 2 fl · 1921

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 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 491-493 15Th 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 1921
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 built1921
Total area2,600 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1529017
Ownership

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

Owner name
Robert Yup Lim Revoc Trust
Mailing address
Robert Yup Lim Trustee 491 15Th Ave San Francisco CA 94118
Last sale
030101

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.

493 15th Ave, San Francisco, CA 94118
491 15th Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The property at 491-493 15th Avenue is a two-unit, two-story multi-family residential building located in San Francisco's Central Richmond neighborhood. The building was constructed in 1921 and is currently owned by the Robert Yup Lim Revocable Trust. The building's maintenance history shows several significant events, with particular attention needed for plumbing infrastructure concerns. Most notably, there have been three documented sewage backup incidents through the 4-inch sewer vent (in 2011, and twice in 2020), suggesting potential ongoing plumbing system issues. The property underwent some structural work in 1985 when the foundation was refaced and raised on five posts, and in 2006, the building received a new roof at a cost of $7,500.

Recent activity at the property has primarily involved external enforcement issues, particularly related to parking violations and maintenance concerns. There have been multiple documented incidents of vehicles parking on the sidewalk between 2019-2021, with at least two of these occurring in 2020 shortly after each other. A more recent parking violation occurred in September 2024, resulting in a citation. The property experienced one instance of graffiti in 2018, which was addressed by city maintenance crews. While the building itself appears to be maintained structurally, as evidenced by the roof replacement and foundation work, the recurring sewer issues and ongoing parking violations in the vicinity are noteworthy. The most recent significant infrastructure work was performed in 2006, and there are no documented permits for major renovations or updates in the past 17 years.

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

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Risk rating

How 491-493 15Th 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
47th percentile

Out of 2250 buildings in this neighborhood, 1192 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

DBI complaint rate, owner's portfolio

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 81.4%
Moderate concern 13.8%
Severe concern 4.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

491-493 15Th Ave event timeline

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

2025
311 Request Jun 29
Blocking driveway cite tow
Parking Enforcement

See all 1 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 491-493 15Th Ave apartments

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

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