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642-644 6Th Ave

Inner Richmond, SF 94118 1639037 3 units · 3 fl · 1913

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 642-644 6Th 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 1913
2 or more units
3 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
Units3
Floors3
Year built1913
Total area3,125 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1639037
Ownership

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

Owner name
Melvyn L Louie Revocable Tr
Mailing address
642a 6th Ave San Francisco CA 94118
Last sale
042798

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.

642 06th Ave, San Francisco, CA 94118
644 06th Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The three-story multi-family residential building at 642-644 6th Avenue in the Inner Richmond, built in 1913 and containing three units, has experienced several significant safety and maintenance events over its history. The property underwent various improvements in the 1980s, including a code compliance project in 1985 and a proposed addition and alteration, with construction activity spanning from 1982 to 1987. Of particular concern were three routine safety inspections conducted in 2002, 2006, and 2011 that revealed multiple safety issues requiring attention. The 2006 inspection identified problems with loose boards and missing handrails on the back stairs, while the 2011 inspection noted concerns about combustible storage that required remedial action. Although these violations were eventually abated, they indicate historical maintenance challenges.

More recently, the building has experienced recurring issues with blocked driveways, with ten parking enforcement requests made between 2023 and 2024, resulting in several citations being issued. The most recent building-related activity was a garbage and debris complaint in October 2024 that was resolved. The property's permit history shows limited recent activity, with the most recent recorded permit being for reroofing work from 1992, though this permit is now expired. While there have been no active building violations or complaints in recent years, the pattern of parking enforcement requests suggests ongoing challenges with access to the property.

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

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Risk rating

How 642-644 6Th 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
37th percentile

Out of 1723 buildings in this neighborhood, 1085 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
79%
No DBI
violation
21%
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.

Estimated permit spend (past 7 years)

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 68.4%
Moderate concern 20.1%
Severe concern 11.4%
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

642-644 6Th Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 642-644 6Th 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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