136 Duncan St, San Francisco, CA 94110

The two-unit, two-story residential building at 136 Duncan Street in Noe Valley, owned by the Lau Family 1990 Revocable Trust, has undergone significant improvements and modifications since 2016. The most substantial work occurred between 2016-2017, when the property underwent a comprehensive renovation to legalize a ground floor unit, including interior remodeling, foundation strengthening, and the installation of a complete fire sprinkler system with monitoring equipment.

This period saw the installation of a new 200-amp electrical system, kitchen and bathroom renovations, furnace installation, and various plumbing upgrades including house trap replacement and waste pipe improvements. The building's safety systems were notably enhanced with the addition of fire sprinklers throughout the ground floor and an underground 2" fire service, demonstrating a commitment to modern safety standards. Prior to these improvements, the building's maintenance history shows attention to structural issues, with documented work on stairs repair due to dry rot in 1993 and foundation work in 1998 (though this permit expired).

The property has generated several 311 calls in recent years, primarily related to parking issues (including multiple instances of sidewalk parking between 2018-2022) and some reports of abandoned vehicles, though none of these incidents appear to have directly affected the building's condition or safety systems. A minor fire-related incident was recorded involving a system malfunction, but no civilian injuries were reported. The building's recent history suggests a strong focus on modernization and safety improvements, particularly during the 2016-2017 renovation period, with no significant maintenance issues reported in recent years.