{"id":124,"date":"2020-05-21T00:24:24","date_gmt":"2020-05-21T00:24:24","guid":{"rendered":"https:\/\/www.acassessor.org\/?page_id=124"},"modified":"2026-04-14T01:26:41","modified_gmt":"2026-04-14T01:26:41","slug":"calendar-important-dates","status":"publish","type":"page","link":"https:\/\/www.acassessor.org\/es\/homeowners\/calendar-important-dates\/","title":{"rendered":"Calendar &#038; Important Dates"},"content":{"rendered":"[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.16&#8243; custom_margin=&#8221;0px|||||&#8221; custom_padding=&#8221;0px||0px|||&#8221; global_colors_info=&#8221;{}&#8221;]\n[et_pb_row column_structure=&#8221;1_4,3_4&#8243; _builder_version=&#8221;4.16&#8243; custom_margin=&#8221;0px|auto|0px|auto||&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_sidebar _builder_version=&#8221;4.27.5&#8243; body_font=&#8221;||||on||||&#8221; body_text_color=&#8221;#0a4a8a&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_sidebar][\/et_pb_column][et_pb_column type=&#8221;3_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243;]\n<h1 style=\"color: #1a5276 !important; font-weight: normal; font-size: 2em; border-bottom: 3px solid #2980b9; padding-bottom: 10px; margin-bottom: 20px;\">Calendar &amp; Important Dates<\/h1>\n<h2 style=\"color: #1a3c6e !important; font-weight: 700; font-size: 28px; margin-bottom: 10px;\">Important Dates \u2014 Property Tax Calendar<\/h2>\n<p style=\"color: #444 !important; font-size: 15px; margin-bottom: 25px;\">The following dates and deadlines are provided to assist property owners in Alameda County. Dates marked with an asterisk (*) may shift to the next business day if they fall on a Saturday, Sunday, or legal holiday.<\/p>\n<ul style=\"list-style: none; padding: 0; margin: 0;\">\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">January 1<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Annual Lien Date. All taxable property is assessed as of 12:01 a.m.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">*February 15<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Deadline to file exemption claims for homeowners, veterans, disabled veterans, welfare, cemetery, college, exhibitions, and churches.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">April 1<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Due date for filing Business Personal Property statements.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">*April 10<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Last day to pay second installment of secured property taxes without penalty.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">*May 7<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Last day to file a Business Personal Property statement without a 10% penalty.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">July 1<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Assessment roll delivered by Assessor to County Auditor-Controller. Start of the new assessment roll year.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">July 2<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">First day to file assessment appeal applications with the Clerk of the Board of Supervisors.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">Mid-July<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Annual mailing of assessment notices to all Alameda County real property owners.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">*August 31<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Regular roll unsecured taxes due.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">September 15<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Filing deadline for Assessment Appeals with the Clerk of the Board of Supervisors.<\/span>\n<\/li>\n<li style=\"padding: 14px 0; border-bottom: 1px solid #e0e0e0;\">\n<strong style=\"color: #1a3c6e !important; font-size: 16px;\">*December 10<\/strong><br \/>\n<span style=\"color: #333 !important; font-size: 15px;\">Last day to pay first installment of secured property taxes without penalty. Also the deadline for filing late exemption claims for homeowners, veterans, and disabled veterans.<\/span>\n<\/li>\n<\/ul>\n<p style=\"color: #666 !important; font-size: 13px; font-style: italic; margin-top: 20px;\">* If date falls on a Saturday, Sunday, or legal holiday, mail postmarked on the next business day shall be deemed on time.<\/p>\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"<p>Calendar &amp; Important Dates Important Dates \u2014 Property Tax Calendar The following dates and deadlines are provided to assist property owners in Alameda County. Dates marked with an asterisk (*) may shift to the next business day if they fall on a Saturday, Sunday, or legal holiday. January 1 Annual Lien Date. All taxable property [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":15,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-124","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Calendar &amp; Important Dates - Alameda County Assessor<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.acassessor.org\/es\/homeowners\/calendar-important-dates\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Calendar &amp; Important Dates - Alameda County Assessor\" \/>\n<meta property=\"og:description\" content=\"Calendar &amp; Important Dates Important Dates \u2014 Property Tax Calendar The following dates and deadlines are provided to assist property owners in Alameda County. Dates marked with an asterisk (*) may shift to the next business day if they fall on a Saturday, Sunday, or legal holiday. January 1 Annual Lien Date. All taxable property [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.acassessor.org\/es\/homeowners\/calendar-important-dates\/\" \/>\n<meta property=\"og:site_name\" content=\"Alameda County Assessor\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-14T01:26:41+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.acassessor.org\\\/homeowners\\\/calendar-important-dates\\\/\",\"url\":\"https:\\\/\\\/www.acassessor.org\\\/homeowners\\\/calendar-important-dates\\\/\",\"name\":\"Calendar & Important Dates - Alameda County Assessor\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.acassessor.org\\\/#website\"},\"datePublished\":\"2020-05-21T00:24:24+00:00\",\"dateModified\":\"2026-04-14T01:26:41+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.acassessor.org\\\/homeowners\\\/calendar-important-dates\\\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.acassessor.org\\\/homeowners\\\/calendar-important-dates\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.acassessor.org\\\/homeowners\\\/calendar-important-dates\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.acassessor.org\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Homeowners\",\"item\":\"https:\\\/\\\/www.acassessor.org\\\/homeowners\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Calendar &#038; Important Dates\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.acassessor.org\\\/#website\",\"url\":\"https:\\\/\\\/www.acassessor.org\\\/\",\"name\":\"Alameda County Assessor\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.acassessor.org\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Calendar & Important Dates - Alameda County Assessor","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.acassessor.org\/es\/homeowners\/calendar-important-dates\/","og_locale":"es_MX","og_type":"article","og_title":"Calendar & Important Dates - Alameda County Assessor","og_description":"Calendar &amp; Important Dates Important Dates \u2014 Property Tax Calendar The following dates and deadlines are provided to assist property owners in Alameda County. Dates marked with an asterisk (*) may shift to the next business day if they fall on a Saturday, Sunday, or legal holiday. January 1 Annual Lien Date. All taxable property [&hellip;]","og_url":"https:\/\/www.acassessor.org\/es\/homeowners\/calendar-important-dates\/","og_site_name":"Alameda County Assessor","article_modified_time":"2026-04-14T01:26:41+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.acassessor.org\/homeowners\/calendar-important-dates\/","url":"https:\/\/www.acassessor.org\/homeowners\/calendar-important-dates\/","name":"Calendar & Important Dates - Alameda County Assessor","isPartOf":{"@id":"https:\/\/www.acassessor.org\/#website"},"datePublished":"2020-05-21T00:24:24+00:00","dateModified":"2026-04-14T01:26:41+00:00","breadcrumb":{"@id":"https:\/\/www.acassessor.org\/homeowners\/calendar-important-dates\/#breadcrumb"},"inLanguage":"es","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.acassessor.org\/homeowners\/calendar-important-dates\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.acassessor.org\/homeowners\/calendar-important-dates\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.acassessor.org\/"},{"@type":"ListItem","position":2,"name":"Homeowners","item":"https:\/\/www.acassessor.org\/homeowners\/"},{"@type":"ListItem","position":3,"name":"Calendar &#038; Important Dates"}]},{"@type":"WebSite","@id":"https:\/\/www.acassessor.org\/#website","url":"https:\/\/www.acassessor.org\/","name":"Alameda County Assessor","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.acassessor.org\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es"}]}},"_links":{"self":[{"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/pages\/124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/comments?post=124"}],"version-history":[{"count":3,"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/pages\/124\/revisions"}],"predecessor-version":[{"id":3734,"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/pages\/124\/revisions\/3734"}],"up":[{"embeddable":true,"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/pages\/15"}],"wp:attachment":[{"href":"https:\/\/www.acassessor.org\/es\/wp-json\/wp\/v2\/media?parent=124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}