337-339 Lexington St, San Francisco, CA 94110

The property at 337-339 Lexington Street in San Francisco's Inner Mission is a two-unit, two-story multi-family residential building constructed in 1900, currently owned by Lee Cheh. The building has experienced ongoing issues related to an improperly installed window that opens into a neighbor's air space, which has been a source of conflict between the units.

In 2019, multiple building permits were filed regarding the window replacement, including a cancelled permit in May 2019 and a denied permit in April 2019, which led to a violation notice filed in June 2019 regarding work being done during an appeal process. An additional complaint was filed in April 2019, alleging that the window was installed without proper permits and was being misused as a fire exit, though this complaint appears to have no active status. The property has faced recurring maintenance and cleanliness issues in the immediate vicinity, with multiple reports of graffiti (notably on the sidewalk in front of the property in 2022 and 2023) and loose garbage requiring general cleaning (documented through various 311 calls between 2022 and 2024).

The most recent incidents include reports of abandoned Christmas trees and general cleaning issues in early 2024. Planning records show a closed case regarding exterior alterations without a preservation entitlement in the property’s Liberty Hill Landmark District designation, though this was ultimately marked as having no violation. While the building's permit and violation history suggests ongoing challenges with window modifications and neighboring relations, the property has maintained its basic two-unit residential structure as originally permitted over a century ago.