The Plumas/Siena Regional Courthouse court location of the Superior Court of California, Counties of Plumas and Siena (in Portola, CA) is open Monday through Thursday from 8:00 a.m. to 4:00 p.m. and Friday from 8:00 a.m. to 3:00 p.m., excluding court holidays. The telephone lines are answered Monday through Thursday 8:00 a.m. to 4:00 p.m. and Friday 8:00 a.m. to 3:00 p.m.
Effective November 3, 2014 the Plumas/Sierra Regional Courthouse location of the Plumas and Sierra Superior Court will be closed. Beginning on November 3’d all current and future traffic and small claims cases for the Plumas Superior Court will be processed and heard at the Quincy Courthouse, 520 Main St., Quincy, CA 95971. Telephone (530) 283-6232. For information on all current and future traffic cases for the Sierra Superior Court please contact the Sierra Superior Court at (s30) 289-3698.
The courts find this action necessary due to the continuing and ongoing budget reductions to the local trial courts. The budget reduction to the local trial courts in the cunent fiscal year has demanded that the courts examine all phases of their operations and make reductions in service levels. If the budget lor the courts increases in future years, the courts would work to re-open the regional courthouse.

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