3487-3497 21st St, San Francisco, CA 94110
The three-story, six-unit multi-family residential building at 3487-3497 21st Street, owned by the Robert J Maron Living Trust, was constructed in 1909 in the Eureka Valley/Dolores Heights neighborhood. The building's recent history shows a significant cluster of safety compliance issues in December 2022, when multiple building violations were filed regarding fire safety equipment and documentation, including smoke/carbon monoxide detector compliance and fire extinguisher maintenance. These violations were all abated by January 27, 2023.
The building underwent several maintenance and infrastructure upgrades over the years, including reroofing in 1995, electrical work in 2003 (though this permit expired), and the removal of wireless antenna equipment in 2013-2015, when the property transitioned from hosting multiple antennas to retaining only one OTARD antenna. Historical records show routine apartment inspections in 2001 and 2007, with no significant issues reported during those times. The property has experienced several residential-related incidents, though none resulted in significant damage or injuries.
These include multiple false alarm activations, a carbon monoxide detector activation, and a water leak incident, all recorded by the fire department. The most recent activity around the property, as documented through 311 calls, primarily involves street and sidewalk maintenance issues, including reports of illegal postings, garbage and debris concerns, and some parking-related complaints. A notable complaint was filed in October 2022 regarding construction activity and related street blockage, though this was abated within a week. While the building has had its share of maintenance issues, most have been promptly addressed, and there are no currently active violations or complaints on record.
3487-3497 21st St Report Contents
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Building Characteristics
Total units | 6 |
---|---|
Year built | 1909 |
Total area | 6114 sq ft |
Floors | 3 |
Tax Abatements | None |
Building Class | A5 - Apartment 5 to 14 Units |

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Key Building Statistics
Included Addresses
- 3487 21st St, San Francisco CA 94110
- 3493 21st St, San Francisco CA 94110
- 3491 21st St, San Francisco CA 94110
- 3489 21st St, San Francisco CA 94110
- 3495 21st St, San Francisco CA 94110
- 3497 21st St, San Francisco CA 94110
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