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550-552 24Th Ave

Central Richmond, SF 94121 1521027A 2 units · 3 fl · 2002

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 Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 550-552 24Th 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 2002
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units2
Floors3
Year built2002
Total area3,664 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1521027A
Ownership

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

Owner name
Ng Trust
Mailing address
Theodore & Janie S Ng 552 24Th Ave San Francisco CA 94121
Last sale
072905

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.

550 24th Ave, San Francisco, CA 94121
552 24th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 550-552 24th Avenue is a three-story, two-unit multi-family residential building located in San Francisco's Central Richmond neighborhood. Built in 2002, this flats and duplex structure underwent significant development in 2001-2002, including a major conversion from a single-family dwelling to a duplex with a 480-square-foot addition. The construction project, which had an original cost of $300,000, included several modifications such as the addition of a toilet and wash basin, and work on garage floor footings, with all related permits now expired. The most recent building-related activity occurred in August 2016 with a street space permit issuance for a nominal cost of $1.

The property has experienced recurring issues with driveway blocking, with seven documented incidents between 2020 and 2024 resulting in citations, though some cases were unable to be located by responding officers. Additionally, there have been two pavement defect reports (most recently in March 2024) and one illegal posting violation in January 2022. A hazardous materials incident involving glass was reported and resolved in December 2020. The pattern of parking violations suggests an ongoing challenge with street parking management in the area, though this is not directly related to the building's structural or operational condition.

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

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Risk rating

How 550-552 24Th 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
99th percentile

Out of 2250 buildings in this neighborhood, 22 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
96%
No DBI
violation
4%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

Building age

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

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month severity forecast
No violation 86.0%
Moderate concern 10.2%
Severe concern 3.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

550-552 24Th Ave apartment reviews

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The story over time

550-552 24Th 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 550-552 24Th 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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