4027 Noriega St, San Francisco, CA 94122

The property at 4027 Noriega Street in San Francisco's Outer Sunset neighborhood is a 2-story, multi-family residential building constructed in 1919, containing three units plus a storefront. Currently owned by Bozionelos Jim, the building has undergone significant recent changes, particularly concerning the commercial portion. Most notably, the ground-floor space transitioned from a paint store to "Muscle Beach" fitness gym, with unauthorized modifications including four skylights, new signage, and electrical work, which led to an active building violation filed in February 2024.

Despite these violations, a permit was issued in August 2024 for the gym conversion and associated alterations, suggesting attempts to legalize the changes. The building has experienced persistent issues with noise, particularly regarding early-morning disturbances from gym operations, with multiple 311 calls about excessive noise recorded between August 2024 and January 2025. Infrastructure improvements are evident, including completed sewer lateral replacement in July 2023 and gas houseline extension work in May 2023.

The property has a history of tenant buyouts, with one recorded in November 2021 for $37,600. The recent commercial modifications and their impact on the residential portion of the building are of particular note, with complaints about lack of soundproofing between the gym and adjacent residences. The property has seen multiple enforcement actions and resident complaints regarding unauthorized work, though there appears to be an ongoing effort to bring the gym's operations into compliance through proper permitting processes. The building's dual-use as a multi-family residential and commercial space continues to generate regulatory and resident concern, particularly around noise and construction compliance issues.