678 41st Ave, San Francisco, CA 94121
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.
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Building Characteristics
Total units | 2 |
---|---|
Year built | 1914 |
Total area | 3671 sq ft |
Floors | 2 |
Tax Abatements | None |
Building Class | F - Flats & Duplex |

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Key Building Statistics
Included Addresses
- 678 A 41st Ave #lower, San Francisco CA 94121
- 678 41st Ave #upper, San Francisco CA 94121
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