1-3 Coso Ave, San Francisco, CA 94110

The two-unit residential building at 1-3 Coso Avenue in Bernal Heights is a two-story flats and duplex structure built in 1906, currently owned by Christopher Vanpelt. The property has undergone significant recent improvements, including the installation of two new photovoltaic solar systems (3.825 kW and 3.40 kW) in January 2024, replacement of both front siding (July 2023) and rear yard stairs (May 2023), and the completion of a soft-story infill project for storage and door replacement (March 2023).

The building has received substantial infrastructure upgrades since 2016-2017, including a complete kitchen remodel, ductwork replacement, bathroom renovations, and HVAC improvements with two new water heaters (2022-2023) and a new furnace. A notable incident occurred in November 2017 when a vehicle struck the front stairs, requiring repairs to the gas line and siding, though these issues were promptly addressed. The property's maintenance record shows regular updates to fixtures and systems, including bathroom and kitchen renovations, electrical upgrades (including knob and tube replacement), and plumbing improvements.

While there have been several building complaints and violations in recent years (2016-2017) regarding mechanical permits and possible illegal units, these issues have been resolved and are no longer active. The building has also received attention from city services for various exterior maintenance needs, as evidenced by multiple 311 calls for cleaning and parking enforcement between 2023-2024. Recent permits and improvements indicate ongoing maintenance and upgrading of the property, with particular attention to safety features like stairs, solar energy systems, and building envelope maintenance.