3471 21st St, San Francisco, CA 94110

The 5-unit multi-family residential building at 3471 21st Street in Eureka Valley/Dolores Heights, owned by Andres & Tanya Mera 2013 Li and constructed in 1959, has undergone significant maintenance and improvements over the past two decades. Most notably, the building completed a mandatory soft-story retrofit in 2016 (with revisions in 2020) under San Francisco's seismic safety requirements, including the installation of steel moment frames and new plywood shear walls, achieving Tier 3 compliance.

The property has experienced recurring sewer issues, with multiple backups reported between 2018 and 2021, including a specific complaint in August 2021 about sewage flowing from the house trap. Recent improvements include a $29,245 reroofing project in 2022 and window replacements in Unit 1 in 2022, along with substantial renovations to Unit 5 in 2014 involving bathroom remodeling, soundproofing, and various electrical upgrades.

The building has a history of addressing safety concerns, as evidenced by the abatement of multiple violations in 2012 related to fire safety, smoke detection, and gas utility requirements. Recent 311 calls primarily concern parking issues and garbage concerns outside the building, while a single fire-related incident was recorded involving a malfunctioning alarm system. The property's maintenance record shows regular updates to infrastructure, including electrical system upgrades, window replacements, and various unit-specific improvements, suggesting active management and upkeep of the building.