310 Duncan St, San Francisco, CA 94131

The three-story multi-family residential building at 310 Duncan Street in Noe Valley, owned by John G & Vivian L Chop Bypa, was built in 1900 and contains two units. The property underwent significant renovations and faced several regulatory challenges between 2015 and 2018. Notable improvements included comprehensive plumbing upgrades in 2016 (including new shower pans, radiant heating system, and complete repiping of multiple bathrooms and kitchen), electrical system upgrades, and window/door modifications at the basement and top floors in 2018.

The building's unit configuration became a contentious issue, with violations filed in 2015-2017 regarding incorrect unit representation, leading to multiple permit revisions to clarify the building as a two-unit residential property. Several building complaints and violations were recorded between 2015 and 2018, including concerns about unauthorized unit merger attempts, exterior maintenance issues during a vacant period, and construction work beyond permitted scope. The property experienced multiple permit revisions to comply with Notices of Violation (NOVs), including fire safety modifications and unit size adjustments.

The most recent significant building permit activity was in 2018, while recent 311 calls primarily relate to routine street maintenance issues. A single smoke detector activation incident was recorded with no fire or civilian injuries. The property's history suggests a period of intense regulatory scrutiny and remediation work between 2015-2018, with subsequent years showing no major building violations or complaints. The building now appears to be in compliance with current regulations, though potential prospective tenants should verify the most up-to-date building status directly with local authorities.