This car purchase agreement details the sale of a vehicle from the Seller to the Buyer. This Addendum is intended for use in the City of Oakland.Use this car purchase agreement template to customize the financing information for your car along with other required details. Free fillable forms: City of Oakland. Non-Federal Agency (CA) Sign up. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. EXEMPT SELLER DISCLOSURE: Within the time specified in paragraph 17A, Seller shall complete and provide to Buyer with an Exempt Seller Disclosure (C.