Soft Story Building
by Matrix Seismic Group

The City and County of San Francisco passed the Mandatory Retrofit Soft Story Building Ordinance 66-13 on April 18, 2013. The Soft Story Ordinance was signed by the Mayor of the City of San Francisco on the 107th anniversary of the 1906 Earthquake. The San Francisco Soft Story Ordinance can affect over 4900 buildings in the City and County of San Francisco.

The ordinance amends the Building Code to establish a Mandatory Seismic Retrofit Program for wood-frame buildings of three or more stories or two stories over a basement or under the floor area that has any portion extending above grade and containing five or more dwelling units where the permit to construct was applied for prior to January 1, 1978 and the building has not been seismically strengthened.

Starting June 1, 2013, the owner of the Soft Story buildings will be notified by The City of San Francisco to comply with the Soft Story Retrofit Ordinance. The owners of the buildings who have been notified that their building is within the scope of the Soft Story Seismic Retrofit shall engage an architect or engineer to submit to the City of San Francisco within the time limit of one year which is set forth in the ordinance a properly completed Screening Form. After submittal of the Screening Form, the owners have 2 to 5 years for plan submittal and 4 to 7 years for Completion of Work & Issuance of CFC2. All times start 90 days after the operative day of the ordinance.

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For free evaluation of your building please contact us at:

Matrix Seismic Group

Behruz Vahdani, Ph.D., P.E.
Phone: 415-935-5151
Cell: 714-336-1112