Free SF apartment background check

479 7Th Ave

Inner Richmond, SF 94118 1537016 4 units · 2 fl · 1923

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 Inner Richmond
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Inner Richmond average of 0.9.

Rent & eviction protection

Is 479 7Th Ave 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 1923
2 or more units
4 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
Units4
Floors2
Year built1923
Total area3,720 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1537016
Ownership

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

Owner name
Seven & Twenty Apt Llc
Mailing address
Hampson & Evangeline Lum 1701 Vallejo St Apt 500 San Francisco CA 94123
Last sale
090208

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 4-unit apartment building at 479 7th Avenue in the Inner Richmond, owned by Seven & Twenty Apt LLC, was constructed in 1923 and consists of two stories. The building's maintenance record shows a reroofing project was undertaken in 2011 at a cost of $9,500. A significant cluster of violations was documented in December 2015, during a routine housing inspection, when multiple safety and maintenance issues were identified, including the need for fire extinguishers, compliance with structural maintenance requirements, carbon monoxide and smoke alarm verification, and the provision of gas utility shutoff tools. These violations were all timely addressed and abated by January 19, 2016.

More recently, the building has experienced some fire safety compliance issues, with two violations issued in December 2024 related to fire extinguisher maintenance and alarm system maintenance, both of which were marked as abated. The property has been subject to several 311 calls regarding various issues, with a notable pattern of parking enforcement requests for blocked driveways between 2020 and 2022, though most of these resulted in citations being issued. There were also two reports of garbage cans being left out continuously in late 2011, and a routine inspection in 2010 that did not result in any ongoing violations. The building's most recent documented fire alarm system inspection in August 2024 resulted in a violation being issued, which was closed in December 2024 with a noted violation disposition.

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

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Risk rating

How 479 7Th Ave'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
32th percentile

Out of 1723 buildings in this neighborhood, 1172 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
76%
No DBI
violation
24%
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.

Estimated permit spend (past 7 years)

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

Building age

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

12-Month severity forecast
No violation 68.2%
Moderate concern 21.8%
Severe concern 10.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

479 7Th Ave apartment reviews

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The story over time

479 7Th Ave event timeline

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

2025
DBI Complaint Sep 15
Date last observed: 14-sep-25; time last observed: 09/14/2025; identity of person performing the work: west coast management company; floor: 1st; unit: 1,2; exact location: main bldg; building type: residence/dwelling insects/rodents; ; additional information: there is a serious rodent infestation in the building. it is a serious health hazard;
Housing Inspection Services
DBI ComplaintSep 05
Date last observed: 05-sep-25; time last observed: 11pm; identity of person performing the work: wayne cheung ([email protected]) ; floor: 2; unit: 2; exact location: main bldg; building type: residence/dwelling insects/rodents; ; additional information: we saw a mouse in our apartment on august 12th, since then, we have been experiencing a building-wide infestation that our neighbors have experienced as well. management and landlord has been unresponsive to our requests and many emails. this poses an extreme health and safety hazard in violation of civil code 1941.1 and housing code 1001(b)(12). we killed an additional 2 mice today. our property manager will not reply and the infestation has made the apartment uninhabitable.;

See all 3 events

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

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Every record we have

Full data for 479 7Th Ave 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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