CSBio Phase 3 Project


SCH Number
Lead Agency
City of Menlo Park
Document Title
CSBio Phase 3 Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Present Land Use
Life Science-Bonus (LS-B)
Document Description
CS Bio (Project Sponsor) is proposing to construct an approximately 100,000-gross-square-foot (gsf) building for research and development (R&D), commercial, and office uses as part of the CS Bio Phase 3 Project (Proposed Project). The two buildings on the Project site at 20 Kelly Court and 1075 O'Brien Drive are two- and three-story structures. Under the Proposed Project, the three-story portion of the building at 20 Kelly Court that would be retained would accommodate approximately 25,394 gsf of R&D uses, and the two-story portion of the building at 20 Kelly Court and 1075 O'Brien would be demolished. The Proposed Project would construct a new seven-story, approximately 100,000 gsf building at 1075 O'Brien Drive with a height of 117 feet. This new building would accommodate approximately 89,191 gsf of R&D and office uses associated with life sciences and 9,869 gsf of ground-floor commercial/restaurant space. The proposed new building would connect, via an elevated pedestrian bridge, to a new five-level parking structure at 20 Kelly Court with approximately 289 parking spaces.

Contact Information

Ori Paz
Agency Name
City of Menlo Park
Contact Types
Lead/Public Agency


Menlo Park
San Mateo
Cross Streets
O'Brien Drive and Kelly Court
Total Acres
Parcel #
055-433-3240 and 055-433-250
State Highways
S 101, SR 84, SR 114, SR 109
Dumbarton ROW
Mid-Peninsula, Open Mind
SF Bay, Hetch-Hetchy ROW

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Highway Patrol (CHP), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Water Quality, California Native American Heritage Commission (NAHC), California Department of Transportation, District 4 (DOT)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC), California Department of Transportation, District 4 (DOT)
Development Types
Office (Sq. Ft. 89191, Acres 2.27, Employees 200)
Local Actions
Conditional Development Permit
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Sewer Capacity, Solid Waste, Vegetation, Wetland/Riparian


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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