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4019 23Rd St

Noe Valley, SF 94114 3655045 2 units · 2 fl · 1900

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 Noe Valley
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 4019 23Rd 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 1900
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 built1900
Total area2,888 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3655045
Ownership

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

Owner name
Clair Richard J & Evelyn Lv
Mailing address
4019 23rd St San Francisco CA 94114
Last sale
053196

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Augrented Insights
Initial analysis

The property at 4019 23rd Street in Noe Valley is a two-unit, two-story multi-family residential building constructed in 1900, currently owned by Clair Richard J & Evelyn Lv. The building has undergone several significant improvements over the past decades, including seismic strengthening of basement and first-floor shear walls in 1990, repair of dry rot in 1991, and most recently, replacement of five windows in 2015 with energy-efficient units having a maximum U-factor of 0.32. A notable recent concern was a fire complaint in September 2024 regarding combustible materials, though this issue was resolved by November 2024.

The property's maintenance history shows various infrastructure and safety improvements, particularly focusing on structural integrity and energy efficiency. Several municipal service calls have been logged, with the most significant being a sewage backup incident in 2013 that required field work to resolve. The building has experienced occasional neighborhood issues typical of urban settings, including graffiti incidents (2009 and 2017), abandoned vehicles (2009 and 2017), and tree maintenance needs (2019). While these incidents reflect normal urban challenges, they appear to have been promptly addressed by appropriate city agencies. The absence of recent major structural or safety issues is noteworthy, though the combustible materials violation from late 2024 brings attention to building maintenance practices that warrant monitoring.

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

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Risk rating

How 4019 23Rd 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
54th percentile

Out of 1879 buildings in this neighborhood, 864 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
79%
No DBI
violation
21%
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.

Building permits, owner's portfolio

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

Estimated permit spend (past 7 years)

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

12-Month severity forecast
No violation 74.8%
Moderate concern 13.5%
Severe concern 11.7%
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

4019 23Rd St event timeline

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

2024
Fire Complaint Sep 27
Combustible Materials
Condition Corrected

See all 1 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4019 23Rd 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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