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501-505 2Nd Ave

Inner Richmond, SF 94118 1545001 4 units · 3 fl · 1909

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 Richmond
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Inner Richmond average of 0.9.

Rent & eviction protection

Is 501-505 2Nd 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 1909
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
Floors3
Year built1909
Total area3,875 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1545001
Ownership

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

Owner name
Jack & Karen F Lum Revoc Lv
Mailing address
Lum Jack & Karen F Ttees 440 3Rd Ave San Francisco CA 94118
Last sale
000000

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.

501 02nd Ave, San Francisco, CA 94118
505 02nd Ave, San Francisco, CA 94118
503 02nd Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The three-story multi-family residential building at 501-505 2nd Avenue in the Inner Richmond, owned by Jack & Karen F Lum Revoc Lv, was constructed in 1909 and contains 4 units plus retail space. The property has undergone several significant safety-related improvements over the years, with the most recent being fire alarm work completed on the 6th floor in 2018 and various fire sprinkler system upgrades between 2007-2015, including a notable 2010 project involving 26 head relocations on the 2nd floor costing $8,400. A series of building violations were recorded in November 2015, including issues with hot water heater safety, fire extinguisher requirements, and egress obstructions at back stairs, though all were abated by December 2015. The building had a hoarding complaint in late 2019 that was found to have no merit by January 2020.

The property has been proactive in maintaining safety systems, with multiple fire safety improvements including the installation of notification devices, smoke detectors, and electrical updates throughout the building. Historical records show attention to structural elements, with rear stairs being repaired in 2002 and other maintenance work completed in response to housing inspections. Recent 311 calls from 2022-2024 have primarily concerned external issues like garbage, debris, and sidewalk maintenance, with one sewage backup incident in June 2022 that was promptly addressed. The building's maintenance history suggests regular upkeep of fire safety systems and prompt responses to housing inspection findings, though there have been periods requiring attention to basic safety compliance and structural elements.

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

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Risk rating

How 501-505 2Nd 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
18th percentile

Out of 1723 buildings in this neighborhood, 1413 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
67%
No DBI
violation
33%
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.

Building size

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

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

12-Month severity forecast
No violation 57.1%
Moderate concern 23.8%
Severe concern 19.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

501-505 2Nd Ave apartment reviews

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The story over time

501-505 2Nd Ave event timeline

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

2026
Electrical Permit Mar 30
Installation of (19) modular workstations
Issued

See all 7 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 501-505 2Nd 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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