Transferring a Principal Residence Value within a County Property owners of at least 55 years of age may transfer the base year value of their principal residence to a replacement principal residence. The replacement must be of equal or lesser current market value and located within the same county.
Go to CCMAP to obtain the parcel number then search in Laserfiche Weblink under Annotated Assessor Parcel Books. Here it will ask you for the parcel book and the page. Surveys are listed in red with a LSM book and page or CR book and page.
Copies of previous (up to 11 years) and current tax bills can be found on line by going to Account Lookup. Taxpayers may also call our office, 925-608-9500 and/or email Tax Information us to request a duplicate tax bill.
If you own and occupy your home as your principal place of residence on January 1, you may apply for an exemption of $7,000 off your assessed value for an annual savings of approximately $70 on your property taxes. New property owners will automatically receive an exemption application.
2026 REQUEST FOR VALUE REVIEW (PROP 8) California State Revenue and Taxation Code, Section 51 authorizes the Assessor to temporarily lower the assessed value of any real property when it is greater than the market value as of January 1, lien date.
An eligible homeowner may transfer the taxable value of their home to a replacement property anywhere within California up to three times. Filing a form is required and the transfer must meet certain conditions; more information and forms are provided below. This provision applies to transfers starting April 1, 2021.
After passage, it became article XIII A of the California Constitution. Under Proposition 13, the annual real estate tax on a parcel of property is limited to 1% of its assessed value. This "assessed value" may be increased only by a maximum of 2% per year until, and unless, the property has a change of ownership.
The formula involves multiplying the assessed value by the Contra Costa County property tax rate, which includes the base rate of 1% plus any voter-approved local assessments and bonds. The actual property tax rate ends up being around 1.3% of a home's assessed value.