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519-521 43Rd Ave

Outer Richmond, SF 94121 1501002 2 units · 2 fl · 1946

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 43Rd 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 1946
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 built1946
Total area2,261 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1501002
Ownership

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

Owner name
Spillane L G & Fontes M A
Mailing address
Spillane & Fontes 14864 Rio Nido Rd Guerneville CA 95446
Last sale
081809

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 43rd Ave, San Francisco, CA 94121
521 43rd Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit residential building at 519-521 43rd Avenue in the Outer Richmond, owned by Spillane L G & Fontes M A, has a documented history spanning several decades since its construction in 1946. The property has undergone several significant improvements, with the most recent being a substantial re-roofing project in 2017 costing nearly $29,000. A notable interior renovation occurred in 2016, involving kitchen updates including new cabinets, sink, flooring, and exterior painting, while a significant bathroom and utility room addition project was initiated in 2004 (with electrical work completed in 2005) costing $40,000. Earlier maintenance work included stucco repairs and window replacements in 1990, and another re-roofing in 1995.

Recent events (2022-2024) have primarily consisted of parking-related issues, particularly concerning blocked driveways, with several enforcement requests made between 2022 and 2024, though many were resolved without locating the offending vehicles. The property has experienced minimal infrastructure-related issues, with only one lighting concern reported in 2018 (resolved by PG&E) and one tree maintenance issue in 2017. Historical records show routine maintenance common for buildings of this age, with various permits for basic upkeep. The most recent structural improvements and relatively low frequency of maintenance issues suggest ongoing property upkeep by the current ownership.

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

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Risk rating

How 519-521 43Rd 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
64th percentile

Out of 1040 buildings in this neighborhood, 374 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 81.8%
Moderate concern 12.9%
Severe concern 5.3%
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 43Rd 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 43Rd 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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