Free SF apartment background check

4479 17Th St

Corona Heights, SF 94114 2654038 5 units · 2 fl · 1953

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 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 4479 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 1953
2 or more units
5 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units5
Floors2
Year built1953
Total area4,069 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2654038
Ownership

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

Owner name
Ammann Vincent & Brigitta T
Mailing address
Vincent&brigitta Ammann 269 States St San Francisco CA 94114
Last sale
042796

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 5-unit, 2-story multi-family residential building at 4479 17th Street in Corona Heights, constructed in 1953, has undergone several significant improvements and maintenance work over the years. Most recently, in August 2023, the building completed a $35,000 kitchen remodel in Unit #4, which included electrical and plumbing upgrades. A notable milestone was the building's compliance with the San Francisco wood-frame seismic retrofit program (Soft Story Tier 3), completed in 2014 with a $50,000 investment, demonstrating commitment to seismic safety. Electrical improvements include the installation of five sub-panels in 2021, and during 2023-2024, there have been multiple parking enforcement calls to the area, suggesting ongoing concerns with parking management near the property.

Historical records show several maintenance and compliance issues that have since been resolved, including fire safety concerns (such as egress obstructions and fire extinguisher issues) in 2000, and multiple interior maintenance matters in 2001 (including floor and wall repairs, window maintenance, and kitchen issues). The building has experienced three false fire alarm incidents between 2021-2022, though none resulted in injuries. More recently, in September 2023, there was a complaint about construction work in the backyard beyond the scope of the 2023 permit, though this complaint has been marked as not active. The property appears to have maintained a regular pattern of improvements and compliance with building codes, particularly focusing on seismic safety and unit modernization, while also addressing historical maintenance issues as they arose.

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

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Risk rating

How 4479 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
21th percentile

Out of 348 buildings in this neighborhood, 275 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
67%
No DBI
violation
33%
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.

DBI tenant complaints (past 7 years)

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

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 70.7%
Moderate concern 19.3%
Severe concern 10.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

4479 17Th St event timeline

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

2026
Electrical Permit Jan 24
Online electrical permit: category 4a: installation of fire warning and controlled devices of 2,501 - 5,000 ft². supply & install a fire alarm system w/ a new panel, pull station, smoke detectors, and sounders to comply w/ sffd 1103.7.6.1.
Complete
Building PermitJan 23
Supply & install a fire alarm system w/ a new panel, pull station, smoke detectors, and sounders to comply w/ sffd 1103.7.6.1

See all 16 events

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

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Every record we have

Full data for 4479 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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