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462-464 Frederick St

Cole Valley/Parnassus Heights, SF 94117 1262014 3 units · 3 fl · 1900

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Cole Valley/Parnassus Heights
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Cole Valley/Parnassus Heights average of 0.9.

Rent & eviction protection

Is 462-464 Frederick 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
3 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units3
Floors3
Year built1900
Total area3,056 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1262014
Ownership

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

Owner name
Denis & Talia Oconnell Fami
Mailing address
Oconnell Denis Paul Trustee 1550 29Th 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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Multiple entrances & addresses

Included addresses

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

464 Frederick St, San Francisco, CA 94117
462 Frederick St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The three-unit multi-family residential building at 462-464 Frederick Street, owned by the Denis & Talia O'Connell Family, is a three-story flats and duplex structure built in 1900 in the Parnassus/Ashbury Heights neighborhood. The building's maintenance history includes significant repairs such as a $9,000 stair reconstruction project due to rot in 2001, and a roof replacement project in 1988 involving new sheeting and Class A composition shingles. More recently, in 2020, there was a complaint filed regarding construction activities during shelter-in-place orders, though this case is currently not active.

The property has experienced several maintenance-related incidents in 2023-2024, primarily related to street and sidewalk conditions, including reports of general cleaning needs, waste removal, and graffiti. There have also been multiple parking enforcement calls regarding blocked driveways, with three resolved cases between late 2023 and early 2024. While the building has not experienced any recorded fire incidents with civilian injuries, there were two false alarm calls recorded. A tree pruning request was made in July 2023, but this was cancelled due to the implementation of Prop-E, which shifted focus to priority 1 and 2 tree maintenance needs across San Francisco. The building's permit and complaint history shows regular maintenance attention over the years, with no recorded tenant buyouts at the address.

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

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Risk rating

How 462-464 Frederick 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
17th percentile

Out of 526 buildings in this neighborhood, 437 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
59%
No DBI
violation
41%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Building age

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

Neighborhood location

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

12-Month severity forecast
No violation 57.5%
Moderate concern 23.6%
Severe concern 19.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

462-464 Frederick St apartment reviews

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The story over time

462-464 Frederick St event timeline

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

2025
DBI Complaint Sep 09
Aparment was remolded but was done w/o permits. also stove have some issue.
Housing Inspection Services
Planning RecordJun 08
Dear Office of Short-Term Rentals, I am writing to report what appears to be an illegal short-term rental operating at: 462 Frederick St San Francisco, CA 94117 Nature of the Violation: This unit is not listed as the host’s primary residence. There appear to be frequent unhosted short-term stays, suggesting the 90-night annual cap may have been exceeded. The property is potentially unregistered, or is being rented ineligible for short-term use (e.g., in a multi-unit or rent-controlled building). There is a frequent turnover of guests (multiple per week), along with excessive noise and luggage traffic. This activity has been ongoing and disrupts the quiet residential nature of the neighborhood. I request that your office investigate whether the rental is in compliance with the San Francisco Short-Term Rental Ordinance. Address: 462 Frederick St, SF, CA 94117 I would prefer to remain anonymous. Thank you for your attention to this matter.

See all 5 events

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

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Every record we have

Full data for 462-464 Frederick 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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