1238 47th Ave, San Francisco, CA 94122

The two-unit residential building at 1238 47th Avenue in San Francisco's Outer Sunset neighborhood, owned by Andrew Klinman and Paris Mart, was constructed in 2008 and has undergone several significant improvements since then. Most notably, in 2015-2017, substantial modifications were made including the addition of a stair penthouse, roof deck with hot tub and fireplace, rear balcony, and various facade improvements totaling approximately $70,000 in construction costs.

The building features modern amenities including a rooftop photovoltaic system (installed in 2018) and comprehensive electrical and plumbing systems, with recent improvements including a rooftop sink installation and gas line work in 2019. The property has experienced some maintenance challenges, particularly with its sewer system, experiencing three sewage backup incidents in 2019, though these were addressed by PUC Sewer Operations. Additional structural improvements were made in 2018 with the installation of new retaining walls in the rear yard costing $40,000.

The building's infrastructure appears well-maintained, with multiple permits indicating regular upgrades and modifications, including recent electrical work for backyard power requirements and roof deck improvements in 2019. Historical permit records show the installation of extensive utilities and systems during the initial construction phase, including dual fireplaces, comprehensive plumbing for both units, and a complete electrical system with multiple utilities. The property has had minimal neighborhood issues, with most 311 calls relating to parking and street cleaning matters rather than building-related concerns.