PTC reviews San Antonio Road area plan existing-conditions report; staff flags housing, safety and flood risks

City staff and consultants presented the existing-conditions summary for the San Antonio Road area plan at the Planning and Transportation Commission meeting on Sept. 10, highlighting housing opportunity sites, multimodal safety gaps, flood-zone exposure and anticipated near-term development activity within the plan area.

Robert Kane, the city’s senior planner and project manager for the San Antonio Road area plan, told the commission the study area covers roughly 275 acres along about 1.8 miles of San Antonio Road and forms the core of the Bayshore–Alma–San Antonio priority development area. "Staff is really excited about this plan and the potential that it might have, to help us reimagine land use and mobility in an important corridor in South Palo Alto," Kane said during the presentation.

Why it matters: the plan area contains a large share of the city’s identified housing opportunity sites and several zoning changes designed to support housing growth. The staff summary said recent pipeline projects could yield roughly 750 housing units if developed as proposed; the plan area’s Regional Housing Needs Allocation (RHNA) portion is approximately 1,559 units. Staff told the commission the area already contains about 800 housing units (about 3% of Palo Alto’s total), with roughly 30% of those units — approximately 252 units, including about 80 senior units — subject to deed restrictions for affordability.

Mobility and safety: the consultants’ multimodal analysis found significant gaps for walking and bicycling, missing sidewalks and many high-stress bicycle segments. Staff noted 143 collisions in the plan area over the past 10 years and said the area accounts for nearly 5% of the city’s fatal and severe-injury crashes. Unsafe speeds on the segment of San Antonio Road between East Charleston and Highway 101 were cited as a primary contributing factor.

Climate and hazards: staff identified portions of the plan area north and east of East Charleston as lying in FEMA flood zone AE — a special flood hazard area — and highlighted exposure to a sea-level-rise scenario of about 36 inches over the coming decades. The presentation said some parts of the plan area are at risk of ground liquefaction as groundwater rises; noise and air-quality impacts from nearby Highway 101, Caltrain and airport operations were noted as additional constraints.

Land use and economy: staff said the plan area contains a diverse mix of industrial, service commercial, office and residential uses, and it accounts for about 40% of the city’s manufacturing jobs despite being only a small portion of Palo Alto’s geography. A market analysis, the presentation said, indicates strong regional demand for mid-rise multifamily housing; staff also identified locations where small-scale retail and neighborhood services could be supported.

Parks and open space: staff reported a local park deficiency in much of the plan area — large parts of the area are more than a 10-minute walk from a park. The draft analysis lists a range of tools to add parks or publicly accessible open space, including city purchase, dedications, development agreements and working with neighboring jurisdictions to assemble larger sites.

Community reaction and coordination: commissioners and consultants stressed the need for coordination with Mountain View, Caltrain, the county and nearby school districts. Staff said Mountain View representatives and some Mountain View residents are already part of the project advisory groups and that the project team will conduct one-on-one outreach to the school districts. Commissioners raised questions about potential displacement of local businesses and manufacturing jobs as redevelopment occurs, the depth of the pipeline’s affordable housing yield, and how the plan will address traffic and school-capacity impacts.

Next steps and schedule: staff described a community workshop set for Oct. 23, a council briefing Oct. 6, and additional advisory-group work through fall 2025. The presentation said the plan will proceed through five project phases with continued public engagement and that staff will use the existing-conditions findings to develop land-use and mobility alternatives for later public review.

The item was treated as a study session; no formal vote was taken. Staff said it will return with draft alternatives and further technical analyses in coming months.