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519-521 46Th Ave

Outer Richmond, SF 94121 1498005 2 units · 2 fl · 1949

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 519-521 46Th 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 1949
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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 built1949
Total area3,060 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1498005
Ownership

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

Owner name
Norkus Arthur W
Mailing address
521 46th Ave San Francisco CA 94121
Last sale
112519

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.

519 46th Ave, San Francisco, CA 94121
521 46th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit multi-family residential building at 519-521 46th Avenue in the Outer Richmond neighborhood, owned by Arthur W. Norkus, has a documented history dating back to its 1949 construction. The property has undergone several significant maintenance improvements, including a completed re-roofing project in 2018 costing $7,200, and historical work on delayed posts and rails at rear decks in 1990. More concerning recent events include two sewage back-up incidents from the side sewer vent in December 2024, which required intervention from PUC Sewer Operations, though there was no overflow upon their arrival. The building has experienced multiple parking-related issues in the vicinity throughout 2024, with several complaints regarding abandoned vehicles, illegal parking, and a blocked driveway, though many of these cases were either resolved with no enforcement action or transferred to other departments.

Of particular note is the recent tenant buyout transaction recorded on December 5, 2024, involving two tenants at the property address (though the listed address was 519 47th Avenue) with a buyout amount of $67,250. The building's recent history also shows one ongoing noise complaint from July 2024, while a good intent fire call was recorded with no civilian injuries. The property's maintenance record shows regular upkeep, as evidenced by the roofing work completed in 2018, though the relatively recent sewer issues may warrant attention.

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

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Risk rating

How 519-521 46Th 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
56th percentile

Out of 1040 buildings in this neighborhood, 458 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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

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.

12-Month severity forecast
No violation 69.6%
Moderate concern 16.9%
Severe concern 13.5%
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

519-521 46Th 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 519-521 46Th 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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