Free SF apartment background check

416-418 Frederick St

Cole Valley/Parnassus Heights, SF 94117 1261012 2 units · 2 fl · 1900

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 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 416-418 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
2 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
Units2
Floors2
Year built1900
Total area3,300 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1261012
Ownership

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

Owner name
Joseph Szlamnik Jr Trust
Mailing address
Szlamnik Joseph Jr Trustee 418 Frederick St San Francisco CA 94117
Last sale
051603

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.

416 Frederick St, San Francisco, CA 94117
418 Frederick St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The property at 416-418 Frederick Street is a two-unit, two-story multi-family residential building constructed in 1900, currently owned by the Joseph Szlamnik Jr Trust. The building has undergone several significant renovations over the past 25 years, with the most recent work in late 2023 focused on HVAC improvements, including the replacement of five supply ducts and a rooftop gas package unit with associated electrical work completed in early 2024. Major conversions of the ground floor have been completed, transforming parking and storage areas into additional dwelling space, including a $28,000 project in 2001 that created two bedrooms, kitchen, and bathroom facilities. The building has also received attention to maintenance issues, with a sewer replacement completed in 2017 and earlier repairs addressing dry rot on stairs in 1998.

Recent inspections and permits indicate regular maintenance and upgrades, though the property has experienced some external issues as documented in 311 calls, primarily related to street cleaning and illegal postings between 2015 and 2024. The building's modifications and improvements have been carefully documented through various permits, with most recent works focusing on modernizing HVAC systems and plumbing infrastructure. Planning records show the successful conversion of ground floor spaces to living areas, with necessary variances obtained for open space and exposure requirements. The property has maintained a solid record of responding to maintenance needs, with no recorded fire incidents or civilian injuries associated with the building.

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

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Risk rating

How 416-418 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
87th percentile

Out of 526 buildings in this neighborhood, 68 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

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 72.4%
Moderate concern 16.4%
Severe concern 11.2%
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

416-418 Frederick St event timeline

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

2025
311 Request May 26
Not offensive
sidewalk in front of property
Building PermitApr 22
Front siding replacement in kind. to install cedar siding to match existing.

See all 7 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 416-418 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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