Permits have been filed for a small residential expansion at 379 4th Avenue in San Francisco’s Inner Richmond neighborhood. The project will replace a three-story duplex with three apartments in a four-story infill. Daniel Wong of Presidio Group is listed as the project applicant.

379 4th Avenue vertical cross-section, illustration by Levine Architects
The roughly 40-foot-tall structure is expected to yield around 5,470 square feet, including 3,880 square feet for housing and 950 square feet for a ground-level three-car parking. Additional space will be provided for three bicycles.
Levine Architects is responsible for the design. Illustrations show a vernacular facade clad with wood siding. Demolition will be required for the existing three-story home.

379 4th Avenue, image via Google Street View
Wong has been the principal of Presidio Group since 2018, is the Board Vice Chair of the San Francisco Housing Development Corporation, and was a former Housing Commissioner for the City and County of San Francisco from 2003 to 2008. She Ji Chen is listed as the property owner.
Construction is estimated to cost nearly half a million dollars, a figure not inclusive of all development cost, which will likely be much higher. The project timeline has not been provided.
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“Demolition will be required for the existing three-story home.” This appears to be incorrect, as the plans show the existing top two floors being lifted up and a new floor being added underneath. Seems like a tasteful density increase that preserves some of the existing building’s form and details.