Official Forms for Viewing and Downloading. Seller agrees to sell to Buyer, and Buyer agrees to purchase from Seller, subject to the terms, covenants and conditions set forth herein.Please also review the separate Contra Costa County or city specific Ordinances and Regulations for property in the area you are either selling or buying. Answer to Request to: Enforce, Change, End Contact After Adoption Agreement. ADOPT-325, Judges Order to: Enforce, Change, End Contact After Adoption Agreement. Agreement: Your Bid is a Contract. If you are the winning bidder, you enter into a legally binding contract to purchase this asset from the seller. Welcome to Contra Costa County's on-line application process! An Asset Purchase Agreement (APA) is a contract that spells out the terms of the sale in precise detail. It is a legally binding agreement.