Marc's Biography

Marc Tonnesen

Marc Tonnesen is currently serving his third term as Solano County Assessor Recorder, he was first elected in June 2006.  He has 30 years of experience in the private and public sectors as a real estate appraiser and manager.  Since taking office, Marc has improved relationships with many of the County's principal stakeholders and implemented programs to improve the overall efficiency of the office.

Since the real estate market crash of 2008, Marc has proactively adjusted the value of tens of thousands of properties throughout the County thus assuring each property owner of paying the correct amount of property tax.  He works one-on-one with business owners to assure their property taxes are fair and reflect the correct value.  In an effort to continue to improve efficiency, Marc implemented an image conversion program that makes recorded documents more readily available electronically and a social security redaction program that helps combat identity theft.

His professional career began 30 years ago as a private real estate appraiser in Solano County.  He spent thirteen years with the state of California appraising real estate for the Department of Savings and Loan, and later negotiating leases and buying and selling real estate for the Department of General Services.  In 2003 he was recruited to be Assistant Assessor Recorder in Solano County.

Marc is the 2015 President of the California Assessors’ Association.  He is also a past-president of the Bay Area Assessors’ Association, a member of the International Association of Assessing Officers and the County Recorders' Association of California.  Marc is a certified as an appraiser by two state agencies.  He has a Bachelor of Business Administration degree.

A native resident, Marc is a proud member of a pioneer family that has been part of Solano County for five generations.