According to the DMV, yes you can, however the previous owner must sign the necessary forms in order for them to be valid. Download newest version of Alameda County Form • Modify, complete, and send online • Large list of various forms and templates.Avoid white-out, scribbles, and strike-throughs. A bill of sale is a legal document that outlines the purchase of property between a buyer and seller. It commonly includes both parties' information. Bring any and all paperwork you have for the car – bills of sale, previous registration documents, anything that proves you own the car. You may find this paperwork on the DMV website or in the office itself. Buyers may have to pay more for a property than if they made an offer without a home sale contingency. Any questions about properly filling out these forms should be directed to the. ALAMEDA CTC Project Manager.