238-240 20th Ave, San Francisco, CA 94121
The two-unit residential building at 238-240 20th Avenue in the Central Richmond neighborhood, owned by the Afsanfard Family Trust, has undergone several significant maintenance and improvement projects since its construction in 1907. Most recently, in March 2022, the building received a new roof at a cost of $5,000, which included removal of the existing roof and installation of a new system with underlayment.
The property has experienced notable issues with a history of plumbing and moisture problems, particularly in 2011-2012, when multiple violations were recorded related to kitchen plumbing, including leaks under the sink, vent pipe issues, and resulting mold/mildew problems that required remediation. These issues were addressed through a kitchen remodel in 2011 that included new cabinets, floor tiles, and vent pipes, along with electrical work for a kitchen light fixture. Prior to these incidents, the building faced safety concerns in 2007 when violations were recorded regarding the rear exit stairs, requiring repairs to footings, landings, posts, handrails, and guardrails, though these permits expired.
The property has also been the subject of various municipal service requests including multiple instances of garbage receptacle violations in 2015-2016, and two significant sewage backup incidents in September 2019. These issues have generally been resolved through city enforcement actions or completed work orders. The building's maintenance record shows regular upkeep, including three roofing projects over its history (1995, 2007, and 2022), and various interior updates, suggesting ongoing management attention to basic infrastructure needs.
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Building Characteristics
| Total units | 2 |
|---|---|
| Year built | 1907 |
| Total area | 2120 sq ft |
| Floors | 2 |
| Tax Abatements | None |
| Building Class | F - Flats & Duplex |

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Included Addresses
- 238 20th Ave, San Francisco CA 94121
- 240 20th Ave, San Francisco CA 94121
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