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67 Porter St

Bernal Heights, SF 94110 5808011 2 units · 1 fl · 1929

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 Bernal Heights
Above average
avg 1.2
7
FewerMore

This building has 7 novs (7y), above the Bernal Heights average of 1.2.

Rent & eviction protection

Is 67 Porter 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 1929
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
Floors1
Year built1929
Total area1,750 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5808011
Ownership

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

Owner name
Lannie T Siaw Trust Est. Of
Mailing address
David Marsalie & Joseph Lee 521 Hazel Avenue San Bruno CA 94066
Last sale
012799

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 67 Porter Street in Bernal Heights, owned by the Lannie T Siaw Trust Estate of, is a single-story flats and duplex structure built in 1929. The building has experienced several significant maintenance and safety compliance issues over the years, most notably in 2015 when multiple violations were recorded regarding the lack of carbon monoxide detectors and smoke detectors, as well as pest control problems including mouse droppings and holes under kitchen counters. These violations were formally documented on October 14, 2015, with final action taken on January 28, 2016, suggesting they were eventually resolved. More recently, in September 2024, the property experienced a sewage backup issue through a side sewer vent that required attention from the PUC - Sewer Operations. The building's maintenance history includes some basic plumbing work, such as a water heater replacement in 2012, though this permit has since expired.

The property has generated a number of service requests and complaints in 2024, including multiple issues with parking violations near the premises and some minor infrastructure concerns like sign repair and street cleaning needs. Of particular note is the recent activity related to rent board inquiries, with two fee housing inventory requests recorded in November 2024, and another general request in January 2025, suggesting some current tenant concerns about rent and housing fees. There are also documentation of various utility and public works interactions, including a noise complaint in March 2024 and general cleaning issues in December 2023, all of which were addressed through normal municipal processes.

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

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Risk rating

How 67 Porter 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
45th percentile

Out of 1276 buildings in this neighborhood, 702 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
71%
No DBI
violation
29%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

12-Month severity forecast
No violation 73.3%
Moderate concern 16.5%
Severe concern 10.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

67 Porter St event timeline

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

2025
311 Request Mar 08
Garbage and debris
other loose garbage debris yard waste
Building Violation (NOV)Feb 06
Building violation

See all 9 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 67 Porter 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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