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242 24Th Ave

Lake Street, SF 94121 1383035 2 units · 2 fl · 1922

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 Lake Street
At or below average
avg 0.6
0
FewerMore

This building has 0 novs (7y), at or below the Lake Street average of 0.6.

Rent & eviction protection

Is 242 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 1922
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 built1922
Total area3,504 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1383035
Ownership

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

Owner name
Lum Laura
Mailing address
242 24th Ave San Francisco CA 94121
Last sale
022321

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 242 24th Avenue, owned by Laura Lum, is a two-story structure built in 1922 located in the Lake --The Presidio neighborhood. The property underwent significant renovations and improvements between 2015-2019, including substantial first-floor expansions adding bedrooms, bathrooms, an office, and family room, along with new interior staircase connections. This renovation phase included various permits for plumbing (two bathrooms, laundry room), electrical (new lights, switches, receptacles), and building modifications, though there were some unauthorized work complaints regarding construction debris in December 2015 and an August 2016 complaint about a vacant lot. The building's infrastructure was notably upgraded in 2009-2010 with electrical service replacement, and a central heating system was installed in 2015.

Recent issues from 2021-2024 suggest ongoing maintenance challenges, particularly with sewer systems, as there were multiple sewer backup incidents reported through 311 calls in early 2022. The property has experienced recurring parking management issues, with documented cases of driveway blocking in 2021, 2023, and 2024, though these are not directly related to building conditions. A preliminary inspection of the property indicated proper rear yard/open space access for both units. While there have been some neighborhood quality of life issues documented through 311 calls (such as graffiti and general cleaning requests), these appear to be street-level concerns rather than direct building-related issues. The most recent fire incident recorded was a smoke detector activation due to malfunction, with no civilian injuries reported.

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

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Risk rating

How 242 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
98th percentile

Out of 660 buildings in this neighborhood, 13 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
94%
No DBI
violation
6%
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.

Building permits, owner's portfolio

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

Building age

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

Director's hearings, owner's portfolio

Escalated DBI enforcement actions across all of this owner's buildings.

12-Month severity forecast
No violation 89.4%
Moderate concern 8.6%
Severe concern 2.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

242 24Th Ave apartment reviews

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The story over time

242 24Th Ave event timeline

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

2021
Building Permit Oct 05
1st floor: add adu per ordinance 95-17.
$80,000 · Withdrawn

See all 1 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 242 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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