County Administration Building

The new 71,000 square foot County Administration Building will be located at 1025 Escobar Street in downtown Martinez.  It will be four stories in size, and house a variety of County departments, and include the Board of Supervisors meeting chamber.  

Parking has always been a challenge near the current, aging McBrien Administration Building.  The new building will have nearby parking for 250 vehicles, including an increase of approximately 75 spaces for the public.  In addition, there will be public plaza areas where the 12-story building now sits at 651 Pine Street.

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For information, questions, or concerns regarding the Administration Building project, please contact us at 925.335.1088.

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  1. Marina Vista Street Closure

    Contra Costa County Public Works to Close a Section of Marina Vista Street in Martinez Due to Construction of the New Administrative Building Read on...
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Project Accomplishments:

The Administration Building team is nearly complete with thefoundation piles and completed pouring and waterproofing of the service elevatorbase. Backfilling around all the piersand re-establishing the pad elevation was completed. Formwork and reinforcing for the southeasternretaining wall is in progress. The firewater supply line through the foundation was reviewed and approved by the FireDistrict. Layout and excavation for theeastern underground plumbing has also been started. The temporary road at the east end of theproperty opened again in November as storm drain work along Marina Vista wasstarted and has temporarily closed the two blocks under construction. Interior finishes are under review by theCounty. Revisions to the eastern stormdrain system for the new roadway were approved by the City. DCD approval of the architectural plans andMEP systems is anticipated in early December.


View current webcam images or a time lapse of the County Building Demolition site here.

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