Free SF apartment background check

455-457 Pennsylvania Ave

Potrero Hill, SF 94107 4063003B 2 units · 2 fl · 1930

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 455-457 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 1930
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 built1930
Total area2,940 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot4063003B
Ownership

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

Owner name
Wienik Jan Bleyenbert & Ver
Mailing address
Wienik Jan Bleyenbert & Ver 500 Westover Dr #3181 Sanford NC 27330
Last sale
110311

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

457 Pennsylvania Ave, San Francisco, CA 94107
455 Pennsylvania Ave, San Francisco, CA 94107
Augrented Insights
Initial analysis

The property at 455-457 Pennsylvania Avenue is a two-unit, two-story multi-family residential building located in San Francisco's Potrero Hill neighborhood, originally constructed in 1930. The building underwent significant expansion and modernization between 2004 and 2008, with the most substantial work occurring in 2004 when a large-scale renovation project was initiated to add an additional story and a new unit, valued at $300,000. This major renovation was followed by numerous related improvements in 2007, including bathroom relocations, installation of spiral stairs, window modifications, and structural reinforcements, supported by comprehensive electrical rewiring and plumbing updates. The electrical work included installing three panels, 70 lights, 30 switches, and extensive outlet placements, while plumbing improvements featured the installation of two central heaters with 90% efficiency. The building's garage facilities were upgraded in 2008, including work on the garage door and ventilation systems. A rear deck replacement project was completed in 1997 prior to the major renovation work.

Recent records from 2024 show several 311 calls related to the property's vicinity, primarily concerning street maintenance issues such as garbage, debris, and graffiti, though none directly related to the building's condition or habitability. The most recent significant building-related event was a tenant buyout in July 2020, when a tenant received $80,000 to vacate the premises, which may indicate previous unit occupancy history. The property has maintained compliance with all major building codes and requirements since its substantial renovation work, with no recorded violations or safety concerns. Current building systems, including electrical and plumbing, were thoroughly updated during the 2004-2008 renovation period, providing modern infrastructure for its current occupants.

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

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Risk rating

How 455-457 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
96th percentile

Out of 726 buildings in this neighborhood, 29 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
91%
No DBI
violation
9%
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 (ZIP code)

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

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.

12-Month severity forecast
No violation 79.6%
Moderate concern 14.9%
Severe concern 5.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

455-457 Pennsylvania Ave apartment reviews

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On the map

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The story over time

455-457 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 455-457 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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