1040 Mason St, San Francisco, CA 94108

1040 Mason Street is a 14-unit, 4-story multi-family residential building in Nob Hill, constructed in 1908 and currently owned by Ten Forty Mason Street LLC. The property has undergone significant improvements and maintenance over the past two decades, including a completed soft-story retrofit (designated as Tier 3) that upgraded GF walls to shear walls and added collectors in the second-floor diaphragm, as well as installation of a new steam boiler in 2022.

Recent building improvements include concrete wall replacement (2021), rear stair repairs (2020), and multiple unit renovations focusing on kitchen and bathroom upgrades, particularly in units 201, 301, and 404 between 2017-2019. The building has maintained its electrical infrastructure with substantial upgrades, including a new 400-amp service installation (2005) and replacement of outdated components in 2002. The building's violation history shows several non-active issues primarily addressed between 2000-2010, including fire safety concerns such as fire escape maintenance and sprinkler system compliance.

Recent fire safety inspections in 2024 indicated corrections to sprinkler and alarm systems, while previous inspections in 2016/2018 also documented prompt resolutions to similar concerns. The property has experienced periodic maintenance issues affecting resident comfort, including heating system complaints in 2013 and some plumbing concerns, though most have been promptly addressed. Recent activity at the property primarily involves standard urban maintenance issues observed through 311 calls, including parking violations and street cleaning concerns, with no recent internal building complaints reported.