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1903 23Rd St

Potrero Hill, SF 94107 4219062 4 units · 3 fl · 1999

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 Potrero Hill
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Potrero Hill average of 1.1.

Rent & eviction protection

Is 1903 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 1999
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RC1
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
Units4
Floors3
Year built1999
Total area5,263 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot4219062
Ownership

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

Owner name
Chow Family Trust
Mailing address
1903 23rd St Apt 3 San Francisco CA 94107
Last sale
091018

Landlord portfolio

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

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Augrented Insights
Initial analysis

This 4-unit, 3-story multi-family residential building located at 1903 23rd Street in Potrero Hill, was built in 1999 and is currently owned by the Chow Family Trust. The building has undergone several significant modifications and improvements since its construction, most notably the legalization of the fourth unit in 2016, which included the installation of a new hallway, kitchen, and associated utilities. This unit's legalization followed a building violation filed in 2015 that cited multiple code violations including unauthorized alterations, improper exiting, and insufficient fire safety features. The building's safety systems have been substantially upgraded over the years, including the installation of a full fire sprinkler system (1999), a 400-amp electrical service upgrade (2017), and a new sprinkler monitoring system (2018). Recent maintenance work includes significant repairs to address dry rot and siding replacement on the west side of the building completed in 2024, following a 2020 permit for similar repairs on that side.

The building has experienced various infrastructure challenges over its history, including sewer connection issues that were resolved in 2016 when the building was directed to install its own sewer system. Earlier concerns from the 1990s included reports of raw sewage problems and multiple allegations of unauthorized units, though these issues appear to have been addressed through subsequent permits and inspections. The property has maintained compliance with building codes since these violations were addressed, though there have been several municipal service requests in recent years regarding the surrounding area, including sidewalk maintenance needs noted in 2024. The building's ownership and management have demonstrated a pattern of addressing maintenance and safety requirements through appropriate permitting and construction work, as evidenced by the completion of numerous building, plumbing, and electrical permits over the years.

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

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Risk rating

How 1903 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
56th percentile

Out of 726 buildings in this neighborhood, 319 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
77%
No DBI
violation
23%
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.

Neighborhood location

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

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

12-Month severity forecast
No violation 52.9%
Moderate concern 36.4%
Severe concern 10.7%
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

1903 23Rd St event timeline

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

2024
Building Permit Apr 26
Repair dryrot and replace siding on west side of building.
$30,000 · Complete

See all 2 events

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

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Every record we have

Full data for 1903 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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