418-420 Union St, San Francisco, CA 94133
The property at 418-420 Union Street is a two-story multi-family residential building in Telegraph Hill, comprising 4 units and owned by Nasser Landis. Built in 1906, the building has undergone significant renovations and improvements over the past few years. Most notably, in 2023-2024, there have been substantial structural and safety improvements including the replacement of a brick retaining wall with reinforced concrete, deck framing repairs, and HVAC upgrades (costing $30,000).
Earlier in 2023, the building received a new roof (costing $18,400) and underwent a comprehensive kitchen and bathroom remodel (costing $100,147). A major transformation occurred in 2022 with the conversion of a commercial retail space into a residential ADU and significant remodeling of Unit 418B ($121,370), including window replacements and HVAC equipment relocation. The building has a history of maintenance and safety compliance issues, particularly between 2001-2012.
There were several building code violations and complaints regarding unpermitted construction work, including unauthorized apartment remodels and bathroom modifications in 2001 and 2012. Fire safety concerns were raised in 2006, and a gas leak incident was recorded (date not specified) with no civilian injuries. However, these issues appear to have been resolved, with all relevant violations marked as "Not Active" and multiple recent permits indicating ongoing investment in building maintenance and improvements. Recent plumbing and electrical work (completed in October 2023) involved extensive updates to Unit 418B, including new wiring and plumbing for kitchen, bathroom, and laundry facilities, suggesting a significant upgrade to building infrastructure and resident amenities.
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Building Characteristics
| Total units | 4 |
|---|---|
| Year built | 1906 |
| Total area | 3559 sq ft |
| Floors | 2 |
| Tax Abatements | None |
| Building Class | F - Flats & Duplex |

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Key Building Statistics
Included Addresses
- 418 Union St, San Francisco CA 94133
- 420 Union St, San Francisco CA 94133
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