CSBio Phase 3

1075 O'Brien Drive
CSBio has submitted an application to construct a new seven-story office and research and development (R&D) building with a ground-floor restaurant, partially demolish an existing office and R&D building and construct a new five-story parking structure located at 1075 O'Brien Drive and 20 Kelly Court. The proposal would include a Conditional Development Permit (CDP) amendment, a below market rate (BMR) agreement per the requirements of the City’s BMR Ordinance, and the provision of community amenities in exchange for bonus level height and FAR. The 1075 O'Brien Drive site contains an existing one-story warehouse/R&D building, approximately 14,500 square feet in size, that would be demolished as part of the project.

The overall proposal includes:
  • Total buildings: approximately 126,291 square feet
  • Restaurant: 9,869 square feet
  • Height: 117 feet
  • Total parking: 252 spaces
  • Open space:
  • Total: 20,232 square feet
  • Public: 9,908 square feet
As part of the ConnectMenlo General Plan and Zoning Ordinance update, the site was rezoned to LS-B (Life Sciences, Bonus). The proposed project would utilize the bonus levels for FAR and height in exchange for community amenities, as defined through the ConnectMenlo process. 

City staff are currently evaluating the project proposal to refine the review process, tentative project schedule, and required land use entitlements. An initial study (IS) has been prepared and released. A scoping session and study session are scheduled for September 13, 2021, to confirm the scope of the focused Environmental Impact Report (EIR). It is anticipated that the following land use entitlements would be applicable to the proposed project:
  • Environmental review
  • Conditional Development Permit amendment
  • Below Market Rate (BMR) housing agreement
  • Lot merger

Current status


The City Council authorized the contract to begin work on the EIR in June 2020. A scoping session and study session is scheduled for the September 13, 2021 Planning Commission Meeting.

On August 26, 2019 the proposal was reviewed at a second Planning Commission study session. At the meeting the Planning Commission and community provided further guidance and feedback on the proposed project, including direction to remove the proposed heliport, relocate the restaurant to the ground level and reduce the size of the parking structure.

On August 14, 2017, the proposal was reviewed at a Planning Commission study session. At the meeting the Planning Commission and community provided feedback on the proposed project.

Environmental review


An initial study for the project was prepared to evaluate the potential environmental impacts of the proposed project and determine the level of additional environmental review that would be appropriate. The initial study was released on August 27, 2021, with a public review period from August 27, 2021, to September 27, 2021. Comments received on the initial study and scope and content of the EIR will be included on the environmental documents page. In accordance with the requirements outlined in Section 15168 of the CEQA Guidelines, the project-level initial study was prepared to disclose the relevant impacts and mitigation measures addressed in the certified program-level ConnectMenlo EIR and discuss whether the project is within the parameters of the ConnectMenlo EIR or if additional analysis would be necessary.

Additionally, as a result of the settlement agreement between the City of Menlo Park and the City of East Palo Alto, housing and transportation are required to be analyzed. Based on the findings of the initial study, a Draft EIR will be prepared. The initial study and notice of preparation are available through the CEQA documents section of the related documents tab of this webpage. A hard copy is also available for review at the Menlo Park Main Library. Interested parties should inquire at the information desk within to request the document.

If you would like to submit written comments on the initial study, you are encouraged to do so prior to 5:30 p.m., Friday, September 10, 2021, for discussion at the Planning Commission scoping session. Comments will be accepted through the end of the scoping period on September 27, 2021.