Learn about the county's mobilehome tax and transfer. Are you eligible to waive past-due registration fees or local property taxes for your mobilehome?Get in touch with a Contra Costa County real estate agent who can help you find the home of your dreams in Contra Costa County. Streamline your yearly documentation, and reduce the time you may spend on Chattel Mortgage on Mobile Home in 2024. Contra Costa, Monterey, Tehama,.