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675-677 6Th Ave

Inner Richmond, SF 94118 1638013 2 units · 2 fl · 1907

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 675-677 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 1907
2 or more units
2 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
Units2
Floors2
Year built1907
Total area2,750 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1638013
Ownership

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

Owner name
Albert J Tang Living Trust
Mailing address
Tang Albert J Trustee 105 Sotocastle Ln Belmont CA 94002
Last sale
112718

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.

677 06th Ave, San Francisco, CA 94118
675 06th Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The property at 675-677 6th Avenue in San Francisco's Inner Richmond neighborhood is a two-unit, two-story multi-family residential building constructed in 1907, currently owned by the Albert J Tang Living Trust. The building has undergone several significant improvements over the years, with the most recent major work being a reroofing project completed in 2015 at a cost of $9,000. In the early 2000s, the property underwent substantial renovations including a closet-to-bathroom conversion and kitchen remodeling on the second floor in 2002 ($16,000), followed by electrical work for the kitchen, small room, and laundry in 2003, with permits also addressing the correction of unit and story count from previous applications. Earlier improvements included the installation of aluminum windows in 1985.

The building's recent history (2020-2025) shows minimal internal issues, with most recent incidents involving external matters such as parking violations and waste management. There have been multiple reports of vehicles parking on the sidewalk near the property between 2021-2025, resulting in at least two citations being issued. A garbage and debris incident was reported and resolved in August 2024. A general service request was submitted and resolved in May 2020, while a damaged tree complaint from 2009 was addressed by the Department of Public Works. The property's historical permit record indicates proper maintenance and improvements have been carried out over the years, with all major works being completed as per the records.

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

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Risk rating

How 675-677 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
68th percentile

Out of 1723 buildings in this neighborhood, 551 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Building age

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 81.2%
Moderate concern 12.8%
Severe concern 6.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

675-677 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 675-677 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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