Project Description

The Sobrato Organization submitted an application to construct Commonwealth 3 (CW3), which will add a third office building to an existing site with two existing four-story office buildings, each approximately 135,307 square feet (SF). CW3 will bring:

  • a 249,500 SF, four-story office building, and
  • a four-level parking structure with approximately 1,531 stalls

Overall, the campus will have approximately 128,000 square feet of public open space. A 0.2-mile-long and 20-foot wide paseo, available to bicyclists and pedestrians, will be constructed to create a connection around the campus for public use. As part of the public open space, an existing surface lot off of Jefferson drive will be converted into a community park, Jefferson Park. Jefferson Park will be open for campus employees and community.

City WebsiteCurrent Plan Set

Timeline Descriptions


CW3 is located on an approximately 13.3-acre site bounded by US 101, Jefferson Drive, and the currently inactive Dumbarton Rail Corridor.

The Site

Existing Condition Pictures

Community Input

What we’ve learned from the community so far:

  • Traffic is getting more congested
  • Need a space for family activities
  • Area for older kids to “call their own”
  • Bolster current education enrichment programs
  • More job training and job opportunities
  • High-quality affordable housing is needed
  • Belle Haven lacks necessary community services
    • Need for grocery store
    • Need for a pharmacy or multi-purpose store
    • Need for a bank or ATM
    • Another Laundromat

The City of Menlo Park, through ConnectMenlo, developed a Community Amenity Survey which was then distributed to community members to fill out. The results of this survey can be seen via the link below. The Community Amenity Survey acts as a guide for which amenities bonus-level develop projects should provide to the community.

Community Amenities
October 28 Town Hall

Upcoming Events

There are no upcoming events. Thank you for attending our most recent informational open house sessions that were held on June 21, 2022 and June 22, 2022

Community Amenity Survey

We’d like to hear from you! Please fill out the survey below to tell us what community amenity would be most impactful to you,

Who We Are

The Sobrato Organization (TSO) is a philanthropic family-owned firm based in the Silicon Valley. For over 65 years, the Sobrato family has been developing commercial real estate for high-growth companies, building multifamily communities, and giving back to the communities in which the family lives and conducts business. TSO is comprised of three enterprise units (Real Estate & Development, Sobrato Capital, and Sobrato Philanthropies) that work together synergistically to achieve the vision: “Make the Silicon Valley a place of opportunity for all.” Because TSO is a family-owned enterprise, with no outside equity partners, TSO thinks in terms of decades and only develops projects that it expects to own for the long term. In short, the family does not develop any building it is not proud to own for a long time. Because of this, TSO seeks to become long-term partners with the communities it develops in understanding there is a sensitive balance between growth and the impacts of new development.

Connect with Us

Thank you for taking the time to learn more about CW3. We’d love to hear what’s on your mind, so please feel free to reach out to our project team below:

Peter Tsai:
Christina Burke:

If you’d like to hear about updates and future events, please sign up here: