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566 Pennsylvania Ave

Potrero Hill, SF 94107 4103011 2 units · 2 fl · 1977

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 Potrero Hill
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Potrero Hill average of 1.1.

Rent & eviction protection

Is 566 Pennsylvania 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 1977
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
Floors2
Year built1977
Total area3,120 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4103011
Ownership

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

Owner name
Drefke Shinbori Trust
Mailing address
Dennis D & Wendy M Drefke S 706 Kansas St San Francisco CA 94107
Last sale
000000

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 566 Pennsylvania Avenue in Potrero Hill, owned by Drefke Shinbori Trust, was constructed in 1977 as a two-story flats and duplex structure. The property has undergone several notable maintenance and incident events over the past decade. In 2011, weather-related damage required repairs to the building's siding, while in 2016 a direct vent gas fireplace was installed. The building has experienced multiple sewer-related issues, with documented incidents in January 2022 including a sewage backup and a missing side sewer vent cover, and a customer callback in March 2021 regarding sewer concerns. A water leak was repaired by PUC Water in January 2012. The property has also had two false alarm incidents: one for an alarm system activation and another for a carbon monoxide detector activation, neither resulting in any injuries or actual emergencies.

Additional records show various municipal interactions, including a 2019 PG&E work permit related to a gas leak investigation at a neighboring address, and two 2022 incidents involving street maintenance - a Christmas tree removal and the aforementioned sewer vent issue. The building's most recent permitted use change was an approved Cottage Food Operator application, allowing for a minor commercial use occupying less than one-third of the floor area with one non-resident employee. All reported issues have been resolved according to city records, though the frequency of sewer-related incidents can be noted as a consistent concern for the property.

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

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Risk rating

How 566 Pennsylvania 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
67th percentile

Out of 726 buildings in this neighborhood, 240 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
82%
No DBI
violation
18%
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.

Property class: multi-family flat

2–4 unit flats (class F) are a common SF building type with their own maintenance and complaint patterns.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

Construction spend, owner's portfolio

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

12-Month severity forecast
No violation 70.8%
Moderate concern 21.1%
Severe concern 8.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

566 Pennsylvania 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 566 Pennsylvania 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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