Our office establishes and maintains a set of maps for assessment purposes delineating every parcel of land in the County. These parcel
maps serve as the basis for the assessment of all real property in Marin County. The maps are continuously updated to reflect new
subdivisions and surveys. These maps are available for review in room 208 and room 232. Copies may be purchased in the Mapping Section
Assessor Parcel Combination Requests
An Assessor Parcel combination is two or more Assessor Parcels consolidated into one Assessor’s parcel resulting in a single annual property tax bill. Assessor Parcel combinations are completed for property assessment purposes only. This action does not imply legal lot status nor does it constitute legal lot approval by any planning/building authority. If you have any questions regarding legal lots, you should contact the appropriate planning/building authority where the property is located.
Assessor Parcel Combination Requests are subject to the following conditions:
Note: If one parcel is under Open Space contract or Williamson Act and the other parcel(s) is/are not, the parcels cannot be combined for assessment purposes.
Applications for Assessor Parcel Combination must be made in person at the Office of the Marin County Assessor-Recorder located in Room 208 of the Marin Civic Center, 3501 Civic Center Drive, San Rafael, CA 94903. The fee for an Assessor Parcel Combination is $150 payable by cash or check.
If you plan to apply for an Assessor Parcel combination, please contact the Assessor Mapping staff at 415-473-5073 beforehand so that Mapping staff can verify that you meet the conditions as shown above.