4030-4036 20th St, San Francisco, CA 94114

The property at 4034 20th Street is a two-story, three-unit multi-family residential building constructed in 1910, currently owned by Peter and Sheri Harris Revoc. The building has undergone significant recent development activity, most notably a major renovation and expansion project initiated in 2021-2022 that included the installation of a solar PV system (10.4 kW), a new fire sprinkler system throughout the building, and comprehensive electrical upgrades including a new 400-amp service with dual meters. The property is currently in the process of transitioning from a single three-unit structure to a new configuration involving two duplex buildings with basement levels, as part of a lot split project that received conditional approval.

This redevelopment plan includes replacing the existing 3-unit structure with two buildings, each containing two residential units, along with associated ADUs, though some permits related to the project have experienced revisions and corrections throughout 2023-2024. The building's systems have been extensively upgraded through various permitted work, including the installation of new plumbing systems, grey water recycling for laundry systems, and multiple bathroom renovations featuring new shower pans. Recent building permits show ongoing adjustments to window configurations and Title 24 calculations compliance. The property has undergone comprehensive safety upgrades, including a complete fire sprinkler system installation.

Multiple 311 calls between 2022 and 2024 have primarily concerned street lighting issues and waste management concerns in the vicinity, though none directly relate to building safety or habitability. Notably, there was one tenant buyout recorded in August 2020 for $114,110, though unit configurations and move-out information for this transaction are not fully detailed in the records provided. The building's recent history is characterized by substantial development activity focused on modernization and safety improvements, with a current emphasis on completing the transition to the new two-building configuration as part of the lot split project. While there have been some permit revisions and corrections required throughout the process, most recent permits indicate successful completion of major systems upgrades, including solar, electrical, and plumbing improvements.