639-641 Clayton St, San Francisco, CA 94117

The property at 639-641 Clayton Street is a 2-unit, 2-story multi-family residential building constructed in 1900 in the Haight Ashbury neighborhood, currently owned by the Heiden Family Revocable Trust. The building underwent significant permit activity between 2003 and 2012, including major electrical work, bathroom remodeling, and the installation of a fire sprinkler system.

Of particular note, there was a serious period of permit complications between 2009-2012 when multiple permits expired, including those for fire sprinklers, a vertical addition, footing replacement, and moment frame shearwalls. This situation led to building violations that were not abated until July 2012, when final inspections were finally completed for several previously unfinalized projects, including multiple electrical upgrades, bathroom renovations, and fire safety improvements.

The building has experienced two documented fire incidents - one CO detector activation and one carbon monoxide incident, neither resulting in civilian injuries. Recent 311 calls from 2022-2024 have primarily related to street cleaning issues, with occurrences of garbage, graffiti (though no graffiti was found in 2024), parking violations, and some waste management concerns. Two rear yard variance requests are on file, one of which was withdrawn, and a potential illegal short-term rental investigation was conducted in 2015 but determined to be for a neighboring property instead.