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1609 Franklin St

Lower Pacific Heights, SF 94109 0648003 14 units · 4 fl · 1900

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Lower Pacific Heights
At or below average
avg 1.6
0
FewerMore

This building has 0 novs (7y), at or below the Lower Pacific Heights average of 1.6.

Rent & eviction protection

Is 1609 Franklin 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 1900
2 or more units
14 units
Property type
Multi-Family Residential
Zoning
RM3
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
Units14
Floors4
Year built1900
Total area7,700 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0648003
Ownership

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

Owner name
Koski 1998 Rev Trust
Mailing address
Sunny U Koski Trustee 1076 Sycamore Dr Millbrae CA 94030
Last sale
012899

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 15-unit, four-story apartment building at 1609 Franklin Street in Lower Pacific Heights, owned by the Koski 1998 Rev Trust, was constructed in 1900 and has experienced several maintenance and safety issues over its history. Most recently, in 2023, the building received multiple fire code violation citations, and in 2021 and 2020, there were violations related to the alarm system that required correction. The building underwent plumbing improvements in 2009 with the installation of a new hot water boiler, and a reroofing project was initiated in 1995, though records show this permit expired.

The property has a documented history of heating system issues, with a significant complaint filed in 2008 regarding inadequate heat maintenance in occupied habitable rooms, which resulted in notices and was ultimately abated by March 2008. Additional safety concerns were addressed in 2000 when handrail requirements were enforced and subsequently resolved. Recent 311 calls from 2024 show ongoing challenges in the surrounding area, including multiple reports of garbage and debris, sidewalk tree root damage, sewer issues, and encampments, though these external factors do not directly affect building safety. The building has shown a pattern of addressing violations promptly, with most issues being corrected and closed, including fire safety concerns in 2008 regarding fire extinguisher service and alarm system maintenance. While the property has maintained compliance with many requirements, the recurring nature of some violations, particularly fire safety-related issues, suggests ongoing attention to building systems and safety protocols is necessary.

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

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Risk rating

How 1609 Franklin 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
14th percentile

Out of 670 buildings in this neighborhood, 576 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
42%
No DBI
violation
58%
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.

Building age

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

12-Month severity forecast
No violation 23.7%
Moderate concern 27.2%
Severe concern 49.0%
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

1609 Franklin St event timeline

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

2026
Electrical Permit Apr 15
Online electrical permit: 4 of 4 - 9 floors. installation of a fire alarm system. .
Issued
Fire ComplaintJan 14
Sleeping Area Requirement

See all 10 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1609 Franklin 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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