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519-523 Frederick St

Cole Valley/Parnassus Heights, SF 94117 1266036 3 units · 3 fl · 1900

This building has more problems than most buildings in this neighborhood. 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 519-523 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
RM1
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 area5,550 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1266036
Ownership

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

Owner name
Roth Jacques A
Mailing address
18 Sandstone Ct San Rafael CA 94903
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.

519 Frederick St, San Francisco, CA 94117
523 Frederick St, San Francisco, CA 94117
521 Frederick St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The three-unit multi-family residential building at 519-523 Frederick Street, located in the Parnassus/Ashbury Heights neighborhood, is a three-story flats and duplex structure built in 1900, currently owned by Jacques A. Roth. The building underwent significant repairs and improvements in 2003, including exterior door installation, replacement of rotting structural elements, stair repairs, and a complete reroofing project costing approximately $15,500. Notably, in March 2003, multiple building violations were recorded including issues with stairs, lead paint hazards, water damage, fire safety concerns, and window repairs, though these were all abated by October 2003. The property has had routine housing inspections in 2003, 2008, and 2017, with the most recent inspection in 2017 showing no active violations.

Recent history shows recurring maintenance challenges, with multiple reports of graffiti between 2020-2024, including an offensive graffiti incident in August 2024. The building experienced a sewage backup issue in August 2020 that was resolved, and there was a documented gas leak incident (without civilian injuries) at an unspecified date. The property has maintained compliance with various safety requirements since the 2003 violations were addressed, with only routine maintenance and graffiti removal needed in recent years. The most recent building-related service calls have been for general maintenance issues and responses to external events like the Outside Lands Festival in Golden Gate Park. A moving-related temporary sign request was filed in July 2024, though this remains open as of October 2023.

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

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Risk rating

How 519-523 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
20th percentile

Out of 526 buildings in this neighborhood, 421 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
63%
No DBI
violation
37%
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.

Building age

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

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 68.0%
Moderate concern 16.6%
Severe concern 15.4%
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

519-523 Frederick St event timeline

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

2026
311 Request Jan 17
Garbage and debris
other bagged boxed contained garbage

See all 3 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 519-523 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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