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501 6Th Ave

Inner Richmond, SF 94118 1549001 3 units · 3 fl · 1986

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 501 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 1986
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RM1
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units3
Floors3
Year built1986
Total area4,149 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1549001
Ownership

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

Owner name
Stanley & Nellie Chu 2020 T
Mailing address
Chu Stanley & Nellie Truste 663 24Th Ave San Francisco CA 94121
Last sale
121509

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit, three-story multi-family residential building at 501 6th Avenue in the Inner Richmond was constructed in 1986 after the demolition of a single-family dwelling in 1985, with Stanley & Nellie Chu 2020 T as the current owners. The building's maintenance record shows significant historical permits including a $12,000 reroofing project completed in 2007. The property underwent its most notable incident in June 2002, when multiple violations were recorded during a routine housing inspection, including issues with fire extinguisher maintenance, egress obstructions, gas utility shutoff tools, and plumbing concerns - all of which were resolved by July 2002. A 1998 complaint regarding a leaning roof deck fence was addressed within a month. Since 2024, there has been a notable pattern of parking enforcement issues near the property, with multiple citations for sidewalk parking and bicycle lane blocking, though these are external neighborhood concerns rather than building-specific issues. The building has undergone regular inspections by Housing Inspection Services in 2002, 2009, and 2015, and there was one recorded false fire alarm incident. Recent municipal service requests primarily relate to street maintenance and traffic enforcement, with the most recent being a rent board request for housing inventory information in October 2024.

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

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Risk rating

How 501 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
88th percentile

Out of 1723 buildings in this neighborhood, 207 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
90%
No DBI
violation
10%
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.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 85.2%
Moderate concern 10.3%
Severe concern 4.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

501 6Th Ave apartment reviews

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The story over time

501 6Th Ave event timeline

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

2026
311 Request May 26
Blocking driveway cite only
Parking Enforcement

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 501 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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