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Posted on: July 12, 2022

Aiming to Protect Housing, City Considers Soft Story Retrofit Program

An apartment building has collapsed due to open parking on the first floor.

July 12, 2022

Join us

We invite you to learn more about the proposed Soft Story Retrofit Program at an informational presentation at the City Council meeting on Monday, July 18 at 6:30 pm. The meeting will be in-person and also webcast so that community members may attend virtually. The meeting Agenda will be available 72 hours prior to the meeting and can be found here.

Why is Mill Valley concerned about "soft story" buildings?
How big is the problem in Mill Valley?
What is the City's plan to address the soft story risk?

Download the Soft Story Frequently Asked Questions here.


In an earthquake, "soft story" apartments and condominiums are most susceptible to shaking damage. Soft Story structures are typically residential buildings with open parking or commercial space on the first floor and housing on higher floors. These buildings were built in years past, prior to modern building codes. In an earthquake, ground shaking causes such structures to sway and sometimes to collapse.

Work is currently underway on a proposed Soft Story Retrofit Program in Mill Valley, with an objective to protect existing housing stock in the community. The City estimates that as many as 125 buildings would be considered Soft Story (with 3 or more units) in City limits. 

The development of the program was initiated over a year ago by Mayor John McCauley, spurred by his interest in public safety and preserving existing affordable housing in Mill Valley.

An apartment building has collapsed due to open parking on the first floor.“We know that after an earthquake, rental housing that becomes damaged will return slowly and may be converted to condos, creating a loss of workforce and affordable housing,” Mayor McCauley said. “Developing a Soft Story Retrofit Program similar to what other Bay Area cities have implemented is an important step - both for public safety and for preserving the diversity of housing options in Mill Valley.” Other cities’ programs are described in the links below.

Last year, at their April 5, 2021 meeting, the City Council accepted the Planning & Building Department Work Plan for FY2021/22, which included a brief description of the program and identified funds for consultant support. 

Last month, Director of Planning and Building Patrick Kelly and Consultant David Bonowitz presented to Council a Soft Story Retrofit Program overview with legislative options for Council to consider. Council supported moving forward with a mandatory retrofit program for buildings with 3 or more rental units. Tentatively, the program would include a screening phase to confirm building conditions and exempt certain buildings based on an engineer’s review. After the screening phase, the program would allow several years to complete a retrofit. Review the Staff Report that accompanied the presentation.

An apartment building has collapsed due to open parking on the first floor.Learn More

Resources: Please click on the links below to learn about Soft Story Retrofit Programs in other Bay Area cities:

City of Oakland’s Soft Story Retrofit Program

City and County of San Francisco Soft Story Program 

City of Berkeley Mandatory Earthquake Retrofit Programs

City of Alameda Seismic Retrofit

City of Hayward Mandatory (Soft Story) Seismic Screening Ordinance


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