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591-593 Naples St

Excelsior, SF 94112 6090015A 2 units · 2 fl · 1927

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 Excelsior
Above average
avg 1.4
4
FewerMore

This building has 4 novs (7y), above the Excelsior average of 1.4.

Rent & eviction protection

Is 591-593 Naples St 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 1927
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 built1927
Total area2,759 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6090015A
Ownership

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

Owner name
Liu Kevin & Weng Judy
Mailing address
591-593 Naples St San Francisco CA 94112
Last sale
121713

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.

593 Naples St, San Francisco, CA 94112
591 Naples St, San Francisco, CA 94112
Augrented Insights
Initial analysis

The two-unit residential building at 591-593 Naples Street in the Excelsior neighborhood, owned by Kevin Liu and Judy Weng, has a complex history since its construction in 1927. The property experienced significant moisture issues, with multiple mold and dry rot remediation projects undertaken in 2008 ($60,000), followed by a commercial-to-residential conversion work completed in 2010 ($65,000) that included ground-floor remodeling. Between 2007-2011, various infrastructure improvements were completed, including window replacements, plumbing system upgrades, and electrical system enhancements (new 100-amp panel, lighting, and receptacles).

The building has faced several code compliance issues and resident complaints over the years, with the most pressing current concerns being an active complaint from June 2024 regarding unauthorized modifications to the rear exterior (including new stairs, shed, windows, and skylights) and potential fire safety violations. Historical complaints have documented various maintenance and safety issues, including heating system failures in 2007, window problems, and mold issues in 2008. An incident in 2016 involving uncontained paint chips and lead paint concerns was resolved shortly thereafter. The property has undergone multiple permit-required improvements, including bathroom renovations, heating system repairs, and electrical upgrades, though some work has been performed without proper permits according to recent complaints. The building's history also shows regular parking enforcement activity in the vicinity, with multiple citations issued for driveway blocking between 2019-2024.

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

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Risk rating

How 591-593 Naples St'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
19th percentile

Out of 337 buildings in this neighborhood, 273 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
57%
No DBI
violation
43%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month severity forecast
No violation 47.2%
Moderate concern 31.4%
Severe concern 21.5%
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

591-593 Naples St event timeline

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

2026
Building Permit Apr 28
Comply w/ nov#202425126: legalize unwarranted structure @ 2/f. reconfigure rear staircase for code compliance. remove 1 un-permitted shed & reduce size of 1 un-permitted shed. legalize the window replacement on facade.
$80,000 · Filed

See all 8 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 591-593 Naples St 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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