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1739 Lake St

Lake Street, SF 94121 1378031 4 units · 2 fl · 1947

Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Lake Street — not a forecast
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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 1739 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 1947
2 or more units
4 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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1947
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units4
Floors2
Year built1947
Total area3,220 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1378031
Ownership

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

Mailing address
Tane Ong Chan, Trustee 77 Lupine Ave San Francisco CA 94118
Last sale

Landlord portfolio

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

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Augrented Insights
Initial analysis

1739 Lake Street is a two-story, multi-family residential building constructed in 1947, currently owned by the Tane Ong Chan Trust 2004 and containing four units. The property has undergone several significant improvements over the past decades, with the most substantial renovations occurring between 2008-2011, including unit 3 & 4 kitchen remodelings, bathroom updates, electrical and plumbing improvements, and the installation of two new gas furnaces with direct vent fireplaces. A notable round of renovations in 2010 involved deck additions and wall modifications in multiple units, including the installation of new bathrooms. The building achieved an important infrastructure upgrade with an underground service conversion to 200A with 5 meters completed in 2004.

The property faced routine housing inspections in 2001 and 2008, resulting in identified violations related to handrails and gas meter instructions, though these were all resolved by July 2008. More recent history from 2019-2021 shows several parking issues near the property, including reports of abandoned vehicles and sidewalk parking, though these were generally resolved quickly with no direct connection to building conditions. The building has maintained active compliance with housing codes, with no recent violations or complaints recorded since the 2011 renovations, and no current planning actions listed. The property has undergone substantial modernization over the last decade, addressing both safety and comfort improvements across all four units.

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

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Risk rating

How 1739 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
17thpercentile

Out of 660 buildings in this neighborhood, 548 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

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

Director's hearing rate, owner's portfolio

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

Permit rate, owner's portfolio

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

12-Month risk forecast
Moderate failure risk 34%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

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On the map

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The story over time

1739 Lake St 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 1739 Lake St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 1739 Lake St compares to the neighborhood

This building against comparable properties in Lake Street. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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