Free SF apartment background check

4108 17Th St

Corona Heights, SF 94114 2623025B 4 units · 2 fl · 1925

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Corona Heights
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Corona Heights average of 1.2.

Rent & eviction protection

Is 4108 17Th 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 1925
2 or more units
4 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
Units4
Floors2
Year built1925
Total area3,516 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2623025B
Ownership

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

Owner name
Lin Stephanie
Mailing address
428 Beach Crescent #1701 Vancouver BC V6Z3G
Last sale
042914

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 4-unit, 2-story multi-family residential building at 4108 17th Street in Corona Heights, owned by Stephanie Lin, was constructed in 1925 and has experienced several significant maintenance issues over recent years. Most concerning are the recent complaints from March 2024 regarding plumbing problems, including water damage in the lobby ceiling and staircase walls, as well as reports of peeling paint and potential lead pipe concerns. This building has a documented history of moisture-related issues, with a notable pattern of water damage affecting common areas, stairways, and walls, including incidents in 2017 and earlier years.

The property has undergone various structural and safety-related improvements, including multiple repairs to stair landings, roof work, window replacements, and addressing dry rot/termite damage. In June 2017, the building faced multiple violations that were subsequently abated by September 2017, including issues with deadlatch locks, damaged walls/ceilings, flooring concerns, smoke/carbon monoxide alarms, storage obstructions on stairways, garage storage violations, fire extinguisher maintenance, and bidding permits. Several routine inspections have been conducted, with the most recent active inspection from December 2019 still on record.

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

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Risk rating

How 4108 17Th 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
8th percentile

Out of 348 buildings in this neighborhood, 320 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
50%
No DBI
violation
50%
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.

Number of units

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

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 44.1%
Moderate concern 31.3%
Severe concern 24.7%
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

4108 17Th St event timeline

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

2024
DBI Complaint Mar 15
Customer is concerned because of peeling paint in the building and lead in pipes also
Housing Inspection Services
DBI ComplaintMar 14
Pipes leaking into lobby, damaging ceiling. patched but not properly repaired. staircase walls are buckling from rain damage.

See all 5 events

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

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Every record we have

Full data for 4108 17Th 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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