Free SF apartment background check

501 Oak St

Hayes Valley, SF 94102 0841001 7 units · 2 fl · 1961

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 Hayes Valley
Above average
avg 2.3
7
FewerMore

This building has 7 novs (7y), above the Hayes Valley average of 2.3.

Rent & eviction protection

Is 501 Oak 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 1961
2 or more units
7 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units7
Floors2
Year built1961
Total area7,050 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0841001
Ownership

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

Owner name
Gilmore Carol Piper
Mailing address
46 Aloha Ave San Francisco CA 94122
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 2-story, 7-unit apartment building at 501 Oak St in Hayes Valley, owned by Carol Piper Gilmore, was constructed in 1961 and has undergone several significant improvements over the years. Most notably, the building completed mandatory soft-story seismic retrofit work in 2015 (with a cost of $75,000), and has maintained active safety upgrades including a 2019 fire alarm system replacement with new horns in existing units. Recent and current improvements include the ongoing rewiring of Unit #6 as of November 2024, and historical unit upgrades such as the 2016 kitchen remodel in Unit #7, comprehensive electrical upgrades across multiple units between 2015-2018 (including sub-panel relocations and new lighting installations), and various window replacements in Units #3 and #5 in 2009.

The building has experienced several maintenance and compliance issues over the years, with the most recent building violations recorded in 2023 related to fire safety equipment, gas utility shutoffs, and fire escape ladders, though these were subsequently abated. Historical complaints indicate past tenant concerns regarding construction dust in 2009, plumbing issues in 2007, and equipment problems in 2005 (since resolved). The property has an active record of addressing infrastructure needs, including re-roofing projects (2016 and 1998), kitchen and fire safety upgrades, and compliance with modern building codes. However, there has been a notable pattern of garbage and debris issues reported in 2024 near the property, with multiple calls to street cleaning services between September and December 2024, though most were resolved by authorities.

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

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Risk rating

How 501 Oak 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
18th percentile

Out of 1027 buildings in this neighborhood, 842 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
43%
No DBI
violation
57%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

Neighborhood (ZIP code)

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

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

12-Month severity forecast
No violation 36.0%
Moderate concern 28.4%
Severe concern 35.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

501 Oak St apartment reviews

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The story over time

501 Oak St event timeline

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

2026
311 Request Mar 17
Garbage and debris
other loose garbage debris yard waste

See all 19 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 501 Oak 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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