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517-519 33Rd Ave

Outer Richmond, SF 94121 1511002 2 units · 3 fl · 2011

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 Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 517-519 33Rd 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 2011
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors3
Year built2011
Total area4,179 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1511002
Ownership

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

Owner name
Ko Albert & Lam Marian
Mailing address
519 33rd Ave San Francisco CA 94121
Last sale
112612

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.

517 33rd Ave, San Francisco, CA 94121
519 33rd Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 517-519 33rd Avenue in the Outer Richmond is a modern three-story multi-family residential building constructed in 2011, featuring two units and owned by Albert Ko and Marian Lam. The building underwent significant construction and safety improvements between 2005 and 2010, including the installation of a comprehensive fire sprinkler system throughout all floors and the garage, with associated underground water supply work costing approximately $18,000. The electrical system was substantially upgraded during construction, including a 200-amp service upgrade, three meters, and comprehensive wiring for lighting and receptacles.

Several safety-related issues were documented during and shortly after construction, including complaints in 2009 regarding roof safety and exterior construction not following approved plans, though these complaints were eventually resolved by January 2010. The building has experienced periodic fire safety-related incidents over the years, with the most recent being an alarm system issue in July 2024 that was promptly corrected. Historical records show two significant fire safety violations in March 2020 related to sprinkler system maintenance, though these were subsequently abated. The property has also faced some plumbing and electrical concerns, with a 2018 exit maintenance issue and a 2017 hazardous materials concern, both of which were corrected according to fire department records.

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

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Risk rating

How 517-519 33Rd 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
100th percentile

Out of 1040 buildings in this neighborhood, 0 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
97%
No DBI
violation
3%
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.

Estimated permit spend (past 7 years)

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

Building age

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 91.9%
Moderate concern 5.9%
Severe concern 2.3%
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

517-519 33Rd 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 517-519 33Rd 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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