The County Government Building at 1055 Monterey Street.

The role of  the Assessor's Office in County Government is to discover, inventory, and value all real and personal property in the county.  The valuations are then passed forward to the office of the Auditor Controller, Treasurer, Tax Collector, Public Administrator, which applies the correct tax rate, creates property tax bills, mails the bills and then collects the property taxes.  Other responsibilities of the Assessor include creating and maintaining assessment maps for all real property in the County of San Luis Obispo.  We also track and update property ownership records for all property in the county.

For information regarding tax rates, special assessments, maintenance district fees, or tax collection/refunds, please refer to the Auditor-Controller-Treasurer-Tax Collector’s website.


Proposition 19 Filing Information

Proposition 19 changes are significant and complex. Implementing regulations and legislative changes are still being written by state government, even as the assessor is receiving local applications. Our office will process applications as quickly as possible; however, there are delays due to complex processing requirements under Proposition 19.

Significant changes in the law for Base Year Value Transfers and Intergenerational Property Transfer Exclusions (Parent to Child) resulted when California voters approved Proposition 19 in November 2020. To help taxpayers understand the changes and how they may impact you, information is provided in the two links above as guidance from the Assessor. 

For further information, please visit the California State Board of Equalization website.


It's not too late to save on property taxes


County Assessor, Tom Bordonaro, Jr., would like to remind all homeowners, disabled veterans, and eligible non-profit organizations that they may still file claims for exemption and receive partial credit. 

The Homeowner’s Exemption exempts up to $7,000 in taxable value of a property if the claim is timely filed (postmarked on or before February 15, 2022) and up to $5,600 if filed late (postmarked on or before December 12, 2022).  If you received your Homeowner’s Exemption last year, and you still own and occupy the same property this year, you do not need to file again.  Your exemption automatically remains in place.

The Disabled Veteran's Exemption exempts taxable value of a property owned by a veteran who is 100% disabled due to service-related illness or injury.  The exemption may be up to $224,991 if timely filed (postmarked on or before February 15, 2022) and up to $202,491 if filed late (postmarked on or before December 12, 2022). 

To be eligible for either of the above exemptions this year, claimants must have owned and occupied the property as their principal place of residence as of 12:01 a.m. January 1, 2022.  Please call the Assessor’s office or visit the Exemptions page for eligibility requirements and claim forms. 

Certain non-profit organizations may be eligible for an exemption from property tax if they were using the property for exempt purposes on January 1, 2022. For the full exemption, the organization must have filed or postmarked their claim for Church, Religious, or Welfare Exemption on or before February 15, 2022.  Claimants may be eligible for 90% of the exemption if the claim is postmarked on or before December 31, 2022.


2022-23 assessment roll

The 2022-23 assessment roll for San Luis Obispo County is now completed. The roll values for all properties is a record-setting $67 billion, representing a 6.8% increase over the roll last year. Over the past ten years the assessed value of all taxable properties has increased from $41 billion in 2013 to over $67 billion today. Residential property has been red hot during the past year, a fact which is reflected in the 46.8% increase in changes in ownership. New construction added another 10.2% growth for real properties. Business property, on the other hand, produced 5.5% of the total roll increase. This fairly indicates that commercial and business activity was very modest and resulted in minor growth on the assessment roll.

2021 was a period of dramatic increase in the value of residential property in San Luis Obispo County. Home values shot up significantly in every part of the county as real estate prices increased and listings of available homes were in very short supply. New construction and changes in ownership of residential properties showed the greatest single-year increase in over twenty years. Homeowners are selling for record-setting prices and there is an extremely limited inventory of homes available on the market. With this in mind, temporary value reductions (commonly called Prop 8) are no longer appropriate and must be removed on those properties where this applies. Commercial and industrial properties continue to experience difficulty bouncing back from the impact of government imposed restrictions from the pandemic of the past two years.

Adding complexity to the valuation of properties is the impact of Proposition 19 that was passed by voters in 2020. Under this measure, some homeowners are moving and bringing with them their lower property tax base from the home that they sold. Another part of Prop 19 is creating a nightmare of concern and confusion for property owners who intend to give their property to the next generation of family members. Severe limitations on the ability of parents to give their property to children and grandparents to gift property to grandchildren are part of the impact of Prop 19. My office is endeavoring to assist the public with the confusing and disappointing realities of this major change in the way intergenerational property transfers are handled under the law.

This was a “wow” year for residential properties, and “not so much” for commercial and industrial businesses. My office has captured the reality of changing conditions in San Luis Obispo County and presents these property values in the 2022-23 assessment roll.


2021 Annual Report

The Assessor is responsible for producing an Assessment Roll that lists the latest assessed value of all property within the County of San Luis Obispo each year. This is important information that is compiled into the Annual Report. We are pleased to announce that property values are strong and the number of properties with reduced value are declining.



Property Tax Cycle, Explained