[{"data":1,"prerenderedAt":21},["ShallowReactive",2],{"$fsh94xd3dq7rw":3},{"county":4},{"state":5,"countyName":6,"deadlineFixedDate":7,"deadlineDaysAfterNotice":8,"deadlineRuleSummary":9,"deadlineConditionalNote":10,"deadlineSourceUrl":11,"filingTerm":12,"filingFee":13,"effectiveTaxRate":14,"taxRateConfidence":15,"taxRateSourceUrl":16,"taxRateYear":17,"assessorLookupUrl":16,"assessedValueLabel":18,"assessedValueHelp":8,"valueInputMode":19,"secondaryValueLabel":8,"secondaryValueHelp":8,"assessmentRatio":8,"verifiedAt":20},"CA","Contra Costa County","November 30",null,"Regular assessment appeals must be filed between July 2 and November 30, per the State Board of Equalization's statewide filing-period listing.","If the county Assessor does not mail assessment notices to all taxpayers by August 1, the filing period is extended to November 30 instead of September 15 (California Revenue & Taxation Code Section 1603).","https:\u002F\u002Fwww.boe.ca.gov\u002Fproptaxes\u002Fpdf\u002Ffilingperiods.pdf","appeal",40,0.0125,"secondary_estimate","https:\u002F\u002Fwww.contracosta.ca.gov\u002F168\u002FAssessor",2025,"Current assessed value","single","2026-09-22",1791152857952]