791 Vienna St, San Francisco, CA 94112

The two-unit, two-story multi-family residential building at 791 Vienna St in the Excelsior neighborhood, owned by Moisant Ray & Donna K, was constructed in 1918 and has undergone several significant maintenance and improvement projects in recent years. The property has seen substantial window improvements over the past year, with multiple permits issued for window replacements between October 2023 and April 2024, including both street-visible and rear windows, with associated costs ranging from approximately $6,688 to $20,986.

A complete reroofing project was successfully finished in June 2023 at a cost of $20,000, and the building's plumbing system received an upgrade in 2013 with the installation of a new house trap and section of pipe. The property has experienced various neighborhood issues as documented through 311 calls, with the most recent being an overgrown tree near communication lines (January 2025) and a pavement defect reported in November 2023.

Previous concerns included a garbage and debris incident that was resolved in late 2024, and multiple parking violations between 2018-2021 involving vehicles blocking driveways and parking on sidewalks. The building's exterior maintenance record shows consistent upkeep, particularly with the recent window replacement projects that adhere to energy efficiency standards (U-factor not exceeding 0.30), as evidenced by multiple approved permits for wood aluminum clad window installations.