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678 41St Ave

Outer Richmond, SF 94121 1583030 2 units · 2 fl · 1914

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Outer Richmond — not a forecast
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 678 41St 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 1914
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1914
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units2
Floors2
Year built1914
Total area3,671 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1583030
Ownership

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

Owner name
Mailing address
Tam Chun K & Kimberly Trust 2825 34Th Ave San Francisco CA 94116
Last sale
February 22, 2013

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

678 A 41st Ave #lower, San Francisco, CA 94121
678 41st Ave #upper, San Francisco, CA 94121
Augrented Insights
Initial analysis

The Tam Family Trust owns this two-unit, two-story multi-family residential building located at 678 41st Avenue in San Francisco's Outer Richmond neighborhood. Built in 1914, this flats and duplex property has undergone several significant modifications and faced some compliance challenges over the years. Most recently, in November 2021, a $15,000 reroofing project was permitted and issued. The building experienced notable violation history in 2012 when unauthorized work was done on the rear railing system, leading to several Notice of Violation (NOV) issuances between December 2012 and February 2013, which were eventually resolved through proper permitting that December. A sewer-related incident was documented in August 2019 involving a 4-inch sewer vent and drainage issues requiring significant maintenance work.

The property's historical records show various construction and administrative activities, including address verification for both units in 2009 and multiple permit applications related to interior modifications in the 1990s. Recent municipal service calls from 2019 to 2023 have primarily concerned external matters such as street cleaning, parking violations, and tree maintenance, including multiple reports of sidewalk parking violations in 2022 that resulted in citations. An interesting note is the CO detector activation incident recorded in the fire department's logs, which was determined to be a malfunction with no injuries reported. The building's maintenance history suggests regular upkeep is performed, as evidenced by the recent roofing work and resolution of past violations, though the presence of multiple parking enforcement actions near the property indicates ongoing challenges with street-level access and parking management in the vicinity.

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

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Risk rating

How 678 41St 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
59thpercentile

Out of 1040 buildings in this neighborhood, 426 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
86%
No DBI
violation
14%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

Building age

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

12-Month risk forecast
Low failure risk 14%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

678 41St Ave apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

678 41St Ave event timeline

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

2023
311 Request May 18
Blocking driveway cite tow
Silver - Acura MDX - 5RDT127

See all 2 events

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

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Every record we have

Full data for 678 41St Ave apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 678 41St Ave compares to the neighborhood

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