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2401 Lake St

Lake Street, SF 94121 1385001 12 units · 3 fl · 1952

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

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 2401 Lake 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 1952
2 or more units
12 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units12
Floors3
Year built1952
Total area7,935 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1385001
Ownership

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

Owner name
Onodera Aiko
Mailing address
Po Box 34459 Los Angeles CA 90034
Last sale
082696

Landlord portfolio

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

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Augrented Insights
Initial analysis

2401 Lake Street is a 12-unit, 3-story multi-family residential building constructed in 1952, currently owned by Onodera Aiko. The property has undergone significant improvements and faced various challenges over recent years. Most notably, recent renovations include an in-kind window replacement project filed in August 2023 with an estimated cost of $90,000, and the complete replacement of the hydronic heating boiler in May 2024. The building has also received substantial interior upgrades, with multiple units (1, 2, 3, 6, 10, and 12) undergoing bathroom and kitchen renovations in 2019, including new vanities, tubs, toilets, electrical upgrades, and cabinet replacements.

The building's maintenance history reveals a series of fire safety upgrades, including multiple fire alarm system replacements between 2018-2020 to comply with current codes, though some related violations were noted in 2019. Significant building challenges were documented in 2019, including multiple housing code violations regarding water damage, plumbing issues, and interior surface problems, all of which were abated by October 2022. The property has experienced recurring issues with the fire alarm system, with multiple complaints and violations recorded between 2013-2023, though most were promptly corrected. Recent building complaints have included concerns about weather stripping (2022) and plumbing leaks (2019), with the latter resulting in visible damage between units.

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

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Risk rating

How 2401 Lake 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
3th percentile

Out of 660 buildings in this neighborhood, 640 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
34%
No DBI
violation
66%
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.

Number of units

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

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 19.4%
Moderate concern 64.7%
Severe concern 16.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

2401 Lake St apartment reviews

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The story over time

2401 Lake St event timeline

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

2026
311 Request Jun 16
Affixed improperly
Illegal Postings
311 RequestApr 06
Offensive

See all 26 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2401 Lake 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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