Soft-Story Seismic Retrofit Programs

To identify the possible seismic retrofitting requirements in your specific area, Core Contractors assembled important information for Wood Frame Seismic Retrofit Programs for Soft-Story structures in your specific area. For the most up to date information, please contact the municipality pages using the links provided or contact us should you need additional information.


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City of San Francisco

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City of San Francisco



First to adopt the mandatory Soft-Story Seismic Retrofit Program was the City of San Francisco via ordinance 66-13 in April 2013. 

The structures being evaluated by the city for the mandatory Soft-Story Seismic Retrofit Program compliance have the following characteristics:

  • Wood-frame construction
  • Ground floor contains a weak design with un-reinforced large opening for parking or similar.
  • Permit for original construction issued prior to January 1, 1978
  • Two or more stories.
  • Five or more unit buildings.

In an effort to prioritize the risk of damage by load occupancy, the city established a 4 tier system. The triggers for the completion of the Seismic Retrofit Program are based on the notification letter sent to the owners of each Soft-Story property. Phases of the Soft-Story Seismic Retrofit Program are outlined below. 

City of San Francisco

Additional information about the City of San Francisco MANDATORY SOFT-STORY Seismic Retrofit Program can be obtained here.

City of San Francisco

Core Contractors has designed and developed exactly the program to meet the outlined criteria. Contract us here to have one of our engineers provide you with a no obligation free evaluation and if necessary an estimate to retrofit your structure.

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