Mandatory Soft Story Program
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The Mandatory Soft Story Retrofit Program (MSSP) was created in 2013 as a multi-year community-based effort led by the Earthquake Safety Implementation Program and enforced by the Department of Building Inspection to ensure the safety and resilience of San Francisco's housing stock through the retrofit of older, wood-framed, multi-family buildings with a soft-story condition.
We encourage property owners of soft-story buildings to take the necessary steps to comply with program requirements by filing for a permit to ensure their properties are seismically safe in anticipation of the next big quake.
A City-Wide Problem
The ordinance applies to wood-frame buildings of three or more stories or two stories over a basement or underfloor area that have any portion extending above grade, and containing five or more residential dwelling units where the permit to construct was applied for prior to January 1, 1978, and where the building has not yet been seismically strengthened.
While these types of buildings and their associated risks are found in every neighborhood in San Francisco, they are most commonly found in the following districts: Mission, Western Addition, Richmond, North Beach, Marina District.
We cannot predict when the next earthquake will strike, but we can work together to protect ourselves and our properties. Please see below for guides and helpful resources. For more information, please see the Ordinance here.
Tax Savings with Seismic Retrofit - In general, construction on your property may impact your property taxes. Under CA Prop 13, the market value of the incremental alterations or additions to your property would be added to your total property assessment. Construction performed to seismically strengthen buildings may be eligible for exclusion from reassessment. The California Revenue and Taxation Code provide an exemption for seismic retrofit! In cases where more than seismic work is being done, our office would review the case and be sure to exclude the retrofit component. Just remember to work with your contractor or engineers to keep clear records of the retrofit work and costs and submit a completed exclusion form to our office within 30 days of completing the construction! To learn more about the exclusion, visit sfassessor.org/tax-savings/exclusions/earthquake-retrofit.