Official Forms for Viewing and Downloading. Send a For Sale By Owner prospecting letter to neighbors in 3 simple steps.Learn how to generate leads for your FSBO campaign. This Advisory is for use in Contra Costa County. An Offer to Purchase Real Estate sets out the terms of a proposed real estate deal. Create yours now with our free form. This form is intended for use with the. Applicants interested in the Social Worker III recruitment must complete and submit a separate application for Social Worker III.