Free SF apartment background check

415 Lyon St

North Panhandle, SF 94117 1198005 8 units · 2 fl · 1905

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 North Panhandle
At or below average
avg 1.7
0
FewerMore

This building has 0 novs (7y), at or below the North Panhandle average of 1.7.

Rent & eviction protection

Is 415 Lyon 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 1905
2 or more units
8 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
Units8
Floors2
Year built1905
Total area4,200 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1198005
Ownership

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

Owner name
Young Family Trust
Mailing address
Young William L K & Kelly, 517 Laguna St San Francisco CA 94102
Last sale
050800

Landlord portfolio

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

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Augrented Insights
Initial analysis

The Young Family Trust owns this 8-unit, 2-story multi-family residential building located at 415 Lyon Street in Park North. Built in 1905, the property has undergone several significant transitions, most notably the 2012-2013 removal of an unauthorized attic floor unit with associated kitchen and bathroom facilities, which required multiple permits across building, plumbing, and electrical work totaling approximately $33,000. The building has seen various infrastructure improvements, including a complete reroofing in 2006 ($8,000), extensive electrical rewiring of multiple units in 2007, and exterior stair repairs for dry rot in 1999.

The property has faced persistent maintenance and safety challenges over the years, with multiple building complaints particularly between 2010 and 2017. Notable issues during this period included plumbing problems, electrical permit compliance issues, pest infestations, and water damage leading to mold growth. Fire safety has also been a recurring concern, with several violations related to fire escapes, extinguishers, smoke detectors, and blocked exits, though these issues were generally corrected promptly. Recent years have seen improved responsiveness to maintenance and safety concerns, as evidenced by the resolution of a sprinkler system issue in 2021-2023 and multiple graffiti incidents in 2024.

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

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Risk rating

How 415 Lyon 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
49th percentile

Out of 797 buildings in this neighborhood, 406 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
74%
No DBI
violation
26%
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.

Number of units

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

Building age

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

DBI complaints, owner's portfolio

Complaints across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 49.4%
Moderate concern 29.5%
Severe concern 21.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

415 Lyon St apartment reviews

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The story over time

415 Lyon St event timeline

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

2025
DBI Complaint Oct 16
Date last observed: 15-oct-25; time last observed: all times; floor: rear yard ; exact location: rear bldg; building type: residence/dwelling insects/rodents; ; additional information: we have a large rat population that lives in rear yard and rear of building. rats feed on trash by trash cans which need to be contained. other rodents in building.;
Building Inspection Division

See all 2 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 415 Lyon 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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