Free SF apartment background check

143 23Rd Ave

Lake Street, SF 94121 1383008 2 units · 2 fl · 1914

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 Lake Street
Above average
avg 0.6
4
FewerMore

This building has 4 novs (7y), above the Lake Street average of 0.6.

Rent & eviction protection

Is 143 23Rd 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 1914
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 built1914
Total area2,760 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1383008
Ownership

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

Owner name
Jue Johnny D G&Ngo Oi Chin
Mailing address
143 23rd Ave San Francisco CA 94121
Last sale
022410

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 143 23rd Avenue is a two-unit, two-story multi-family residential building (flats & duplex) located in San Francisco's Lake-The Presidio neighborhood. Built in 1914 and currently owned by Johnny D Jue and Oi Chin G&ngo, this building has experienced several significant maintenance and safety issues in recent years. Most notably, there is an ongoing serious concern regarding lead paint hazards, with multiple active violations filed in January 2023 related to lead abatement procedures and weather protection, prompting a director hearing date set for April 11, 2024. Additional complaints regarding lead paint issues continued into 2024, including reports of flooding caused by lead paint debris clogging garage drains. The building has an extensive history of paint deterioration, with reported issues of peeling paint affecting neighboring properties and storm drains.

The property has been subject to various infrastructure and safety concerns, including an initial roofing project completed in 1990. Recent conditions include sidewalk tree root lifting (open case as of November 2024) and a public stairway defect (resolved in September 2024). The area around the building has experienced multiple parking enforcement issues, particularly regarding vehicles parking on the sidewalk, with several citations issued between April and June 2024. There were also incidents of flooding and waste management violations in early 2024, though these were subsequently resolved. The building’s maintenance history shows some attention to basic upkeep, as evidenced by the completed roofing work in 1990, though the persistent nature of the lead paint issues suggests ongoing challenges with property maintenance and compliance with building codes.

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

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Risk rating

How 143 23Rd 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
14th percentile

Out of 660 buildings in this neighborhood, 568 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
59%
No DBI
violation
41%
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.

DBI tenant complaints (past 7 years)

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

Director's hearing rate, owner's portfolio

Per-building rate of director's hearings across the owner's portfolio.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 14.1%
Moderate concern 78.4%
Severe concern 7.4%
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

143 23Rd Ave event timeline

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

2024
DBI Complaint Mar 04
Lead paint peeling ifo the residence. it is clogging the drain in customer's garage, which causes flooding when it rains.
Housing Inspection Services
311 RequestMar 02
Flooding

See all 12 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 143 23Rd 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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