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239 27Th Ave

Sea Cliff, SF 94121 1387007 4 units · 2 fl · 1923

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 Sea Cliff
At or below average
avg 0.8
0
FewerMore

This building has 0 novs (7y), at or below the Sea Cliff average of 0.8.

Rent & eviction protection

Is 239 27Th 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 1923
2 or more units
4 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
Units4
Floors2
Year built1923
Total area3,350 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1387007
Ownership

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

Owner name
Lorna May Choy Tr
Mailing address
Choy Lorna May Ttee 681 5Th Ave San Francisco CA 94118
Last sale
050500

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story, four-unit multi-family residential building at 239 27th Avenue in Sea Cliff, constructed in 1923, has undergone several significant maintenance and safety-related improvements over its lifetime. Notable works include a partial foundation replacement in 2010 costing $50,000, during which four posts in the garage were replaced, along with the relocation of water heaters and furnaces, and related electrical work in the basement/garage area, all of which were completed successfully. The building faced several pressing issues in 2004, including concerns about lead paint hazards and multiple fire safety violations, such as egress obstructions, combustible storage, and the need for sprinklers over garbage receptacles. These violations were all effectively abated by February 2010, indicating that appropriate remediation work was completed. Earlier renovations included the installation of aluminum windows in 1986 and repairs to back steps in 1996.

The property has had routine housing inspections over the years (1996, 1999, 2004) that identified various maintenance needs, though all were subsequently addressed. More recent attention to the property has focused on external matters, as documented through 311 calls between 2014 and 2022, including issues with street lighting, tree maintenance, graffiti, and sidewalk cleaning. The most recent reports from 2020-2022 primarily involve municipal services rather than building-specific issues. While the 2004 violations were serious at the time, there have been no documented building violations or major safety concerns in recent years, suggesting improved maintenance practices.

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

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Risk rating

How 239 27Th 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
55th percentile

Out of 20 buildings in this neighborhood, 9 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
75%
No DBI
violation
25%
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.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

DBI complaint rate, owner's portfolio

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

12-Month severity forecast
No violation 66.8%
Moderate concern 20.2%
Severe concern 13.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

239 27Th Ave apartment reviews

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The story over time

239 27Th 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 239 27Th 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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