777 Mariners’ Island Blvd San Mateo (Keynote Plaza)

Kinghorn Commercial Properties does not serve as the property manager or landlord’s leasing agent for this building/project but can serve as your tenant representative. You will find below opinions and basic information on the building/project which we have compiled from public sources deemed reliable.

Keynote Plaza is a 180,000 sq ft Class A office building located in the Highway 92/101 Corridor.  The building is located a few blocks away from the main thoroughfare running through the Bridgepointe Area which gives the building a quieter feel.


Property Features

  • On-site deli.
  • On-site fitness center, showers and lockers.
  • Lobby security.
  • Keynote Systems headquarters.
  • Water features on both sides of building.

Nearby Restaurants and Retail Stores

  • Walking distance to BJ’s Brewery and Restaurant, Armadillo Willy’s, Mimi’s Cafe, Chipoltle and other restaurants as well as Bed Bath and Beyond, Verizon, Target, Sports Authority, Home Depot and Pier One.

More Information

For more information on the project or a list of tenants please Contact Us


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