• Instructions for Completing a Contract for Professional Services. • How to determine when to use a Contract for Professional Services vs.It is invalid from the start. The offer outlines the terms of a contract with a statement of what you and the other party agree to. What types of contracts do you use? The County normally utilized two types of contracts, either a firm-fixed price contract or a term contract. STEP 1: USING BLACK INK ONLY, Fill out the "Civil Cover Sheet. " Write in "Maricopa" as the county. Although Arizona law allows for verbal contracts in some cases, most contracts must be written to be considered valid. CONTRACTOR shall provide the City with a written and complete budget outlining all planned revenue sources and expenditures.