937-941 Hayes St, San Francisco, CA 94117
The three-unit residential building at 937-941 Hayes Street in Alamo Square, owned by SST Investments LLC, is a three-story flats and duplex structure built in 1900. The building has undergone several significant renovations and faced multiple maintenance challenges over its history. Most notably, there was a serious fire incident in 1995 requiring extensive repairs, including roof and kitchen restoration.
Recent concerns from 2022-2024 indicate ongoing issues with sewage and water infrastructure, including repeated sewage leaks, sewer vent discharges, and water leaks, with the most recent complaints about leaks and sewage problems continuing into late 2024. The property underwent substantial electrical system upgrades in 2006, including new wiring and service installations for all three units. Historical records show various improvements, such as kitchen and bathroom remodeling in 2005 ($40,000), stair replacements in 2003, plumbing work including a sewer replacement in 2012, and multiple routine safety inspections revealing various code compliance issues. The building has experienced several code compliance issues over the years, with violations recorded in 2003 and 2009 related to fire safety, building structure, and maintenance requirements including fire extinguisher maintenance, stair repairs, and handrail installations.
A concerning pattern of maintenance issues emerges from recent records, with multiple 311 calls in 2024 related to sewage problems, water leaks, and infrastructure concerns. There have also been complaints about insufficient heat and deteriorating flooring in 2014, and routine safety inspections have periodically identified various code compliance issues. While many historical violations have been resolved, the building continues to experience recurring infrastructure problems, particularly in relation to its sewage system and water management. The property has undergone regular maintenance and improvements over the years, including repairs to stairs and landings, fire damage restoration, and various plumbing and electrical upgrades, indicating ongoing investment in maintaining the building's systems and infrastructure.
937-941 Hayes St Report Contents
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Building Characteristics
Total units | 3 |
---|---|
Year built | 1900 |
Total area | 5250 sq ft |
Floors | 3 |
Tax Abatements | None |
Building Class | F - Flats & Duplex |

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Key Building Statistics
Included Addresses
- 939 Hayes St, San Francisco CA 94117
- 937 Hayes St, San Francisco CA 94117
- 941 Hayes St, San Francisco CA 94117
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